Tag: sd card

47 matching upgrades

Showing 47 products.

StatusProductWhat it doesCompatibilityLinks
AvailableChecked Jul 27, 2026A500 8 MB IDE2by Oleg Mishin / Lotharek

Adds 8 MB of Fast RAM and a bootable 44-pin IDE controller at the Amiga 500 CPU socket.

The assembled Lotharek revision exposed a login-or-register-to-buy path on 2026-07-27; the original Oleg Mishin design files, ROM, firmware, software, and four-layer PCB are public. The box contains only the board. Kickstart and Workbench 1.3 or newer can autoboot without a patched scsi.device. A socketed CPU makes installation simple, but an unsocketed CPU must be desoldered. Pin 1 must be observed when attaching CF or SD hardware because a reversed adapter can destroy the CPLD. The open repository documents the original A500 design, while the current seller alone claims A500 Plus support for its revised hardware.

Sources
  • Amiga 500 Exact model
  • Amiga 500 Plus Exact model
Build itChecked Jul 27, 2026ACSI2STMby Jean-Matthieu Coulon / retro16

Uses an STM32 and SD media as a mature open Atari ST hard-drive emulator with ACSI, disk-image, and GemDrive modes.

The upstream project describes hardware and software version 5.00 as finished and mature. Its release package contains files for ordering a compact board with assembly, but the builder must flash it initially with a 3.3 V-compatible USB-to-UART adapter and supply 5 V USB-C power, media, and an optional CR2032. Firmware 1.x, 2.x, and 3.0-or-later boards have different compatibility paths; the current compact design should use the matching current firmware. Lotharek's separate four-slot ACSI2STM Redux case design remained not yet available on 2026-07-27 and is not represented as a current assembled seller.

Sources
  • Atari 1040STE Exact model
  • Atari Mega STE Exact model
  • Atari TT030 Exact model
Build itChecked Jul 27, 2026AppleIISdby freitz85

Provides ProFile-style block storage from a raw SD card for enhanced Apple IIe and Apple IIgs systems.

The repository publishes binaries, firmware, VHDL, schematics, layout files, Gerbers, and a bill of materials, but no explicit license was verified. Capacity is limited to four 65,535-block volumes, or about 128 MB total. Under ProDOS, programs on the third and fourth partitions have a documented launch problem. This is a build project rather than a current assembled product.

Sources
  • Apple IIe Exact model
  • Apple IIgs Exact model
Sold outChecked Jul 24, 2026AppleSqueezer GSby Niek van Suchtelen

Combines a 14 MHz 65816 accelerator, 14 MB memory expansion, HDMI output, RAM disk, and SD-backed drives for the Apple IIgs.

The regular AppleSqueezer GS v2 listing was out of stock on 2026-07-24. A separate preorder tile remained visible, but an active preorder order path was not verified; check the shop or mailing list for another production run.

Sources
  • Apple IIgs Exact model
AvailableChecked Jul 24, 2026AVGCART, SUBCART, and DUMBCARTby MiscRetro

A family of SD multicarts for Atari 8-bit computers, ranging from cartridge loading to disk, tape, memory, clock, and audio expansion.

All three product pages showed In stock and Add to cart on 2026-07-24. Optional SIO, ECI, PBI, and DAC cables are separate. SUBCART's extra functions need ECI or PBI, and the maker does not recommend them on a machine with U1MB or another third-party internal memory expansion.

Sources
  • Atari 800XL Exact model
AvailableChecked Jul 27, 2026BlueSCSI v2 and Ultraby BlueSCSI project

Open hardware SCSI emulator with SD-backed storage, optional Wi-Fi networking, and host-side management tools.

Current seller checks on 2026-07-27 found a $39 internal 50-pin Pico 2 W kit, a $49 assembled external DB-25 model, a $49 PowerBook model, and a $59 assembled Ultra Narrow 50-pin model at authorized seller ToTs RETRO. JCM also carried assembled Ultra hardware and model-specific Macintosh adapters. Prices, stock, included media, and support differ by seller. Ultra models require Berg or Molex power and cannot run from SCSI termination power. The initial Ultra hardware release is not yet open hardware, although its firmware remains GPL; the project says hardware licensing will open later.

Sources
  • Macintosh external DB-25 SCSI Bus/interface
  • Macintosh internal 50-pin SCSI Bus/interface
  • Macintosh Plus Exact model
  • Macintosh Portable Exact model
  • Macintosh PowerBook 140 Exact model
  • Macintosh PowerBook 145 Exact model
  • Macintosh PowerBook 160 Exact model
  • Macintosh PowerBook 165 Exact model
  • Macintosh SE Exact model
  • Macintosh SE/30 Exact model
  • Macintosh Classic Exact model
  • Macintosh Classic II Exact model
  • Macintosh Color Classic Exact model
  • Macintosh LC Exact model
  • Macintosh LC II Exact model
  • Macintosh LC 475 Exact model
  • Macintosh LC 575 Exact model
  • Macintosh IIcx Exact model
  • Macintosh IIci Exact model
  • Macintosh IIsi Exact model
  • Macintosh IIfx Exact model
  • Macintosh Quadra 650 Exact model
  • Macintosh Quadra 800 Exact model
  • Macintosh Quadra 950 Exact model
  • Power Macintosh 8600 Exact model
  • Power Macintosh 9600 Exact model
  • Apple IIgs Exact model
  • General PC hardware Bus/interface
Sold outChecked Jul 27, 2026Cassiopei v2.0by Jan Derogee

Adds SD-card PRG and TAP loading, a fast loader, Wi-Fi file transfer, and cross-development tools through the cassette port of several Commodore 8-bit families.

The maker states that Cassiopei v2.0 is not available. The hardware is described as functionally complete, while firmware, software, manuals, and downloadable updates remain published.

Sources
  • Commodore PET series Stated family
  • Commodore VIC-20 Exact model
  • Commodore 64 Exact model
  • Commodore 16 Exact model
  • Commodore Plus/4 Exact model
  • Commodore 128 Exact model
AvailableChecked Jul 27, 2026CMD HD-4000 Reproductionby ToTs RETRO and COREi64

Licensed, made-to-order recreation of the CMD hard drive with BlueSCSI v2 and externally accessible SD storage.

ToTs RETRO exposed an Add to Cart path at USD 899.99 on 2026-07-27. Each drive is made to order with an advertised lead time of up to one week. Supply an IEC serial cable and a compatible 1581 or 1541-II power supply; neither is included. The seller has not tested simultaneous tape-drive use.

Sources
  • Commodore 64 Exact model
  • Commodore 128 Exact model
  • Commodore Plus/4 Exact model
  • Commodore 16 Exact model
  • Commodore 116 Exact model
AvailableChecked Jul 24, 2026ESProFileby AlexTheCat / Breadcrumbs

Emulates Apple ProFile and Widget hard drives from SD-card images and provides low-level diagnostic and recovery tools.

The Juicy Crumb page provided an order path on 2026-07-24 and explicitly marked the internal option in stock. An ESP32 module is optional in the store selector but required for operation, so verify the contents of the selected external or internal package. The internal variant requires a host with a Widget Data Connector and uses a Widget or Twiggy power cable.

Sources
  • Apple Lisa 1 Stated family
  • Apple Lisa 2/5 Stated family
Sold outChecked Jul 27, 2026Floppy Emu Model Cby Big Mess o' Wires

Uses an SD card to emulate Apple floppy drives and, on supported systems, HD20 or SmartPort hard disks.

The BMOW store showed the assembled Model C sold out at $109 on 2026-07-27. The separate Deluxe bundle is the same emulator packaged with accessories rather than a different product family. Check the direct product page for a restock.

Sources
  • Apple IIe Exact model
  • Macintosh 128K Stated family
  • Macintosh 512K Stated family
  • Macintosh Plus Stated family
  • Macintosh SE Stated family
  • Macintosh SE/30 Exact model
  • Macintosh Classic Stated family
  • Macintosh Classic II Stated family
AvailableChecked Jul 27, 2026FujiNetby FujiNet project

Adds Wi-Fi networking and platform-specific peripheral emulation to several vintage computer families.

JCM showed 16 Apple II base units in stock on 2026-07-24. On 2026-07-27 Lotharek offered its assembled Atari Professional version both alone and with a dedicated SIO cable. It normally takes operating power from Atari SIO and uses USB-C for firmware flashing, although the page separately calls USB-C an optional power source for the 1200XL. The project also lists other small-batch vendors and open design files. Stock, enclosure, connection, power, and required interface hardware vary by computer.

Sources
  • Apple II Exact model
  • Apple II Plus Exact model
  • Apple IIe Exact model
  • Apple IIc Exact model
  • Apple IIc Plus Exact model
  • Apple IIgs Exact model
  • Apple III Exact model
  • Apple III Plus Bus/interface
  • Atari 400 Stated family
  • Atari 800 Exact model
  • Atari 800XL Stated family
  • Atari 600XL Stated family
  • Atari 1200XL Stated family
  • Franklin Ace 2x00 Bus/interface
  • Laser 128 Bus/interface
AvailableChecked Jul 30, 2026GuruModemby Electronics Is Fun

Adds high-speed Wi-Fi networking, file-transfer protocols, and SD-card storage to computers with a standard RS-232 interface.

The maker page exposed direct eBay, Sphere Cube, and Arcade Shopper purchase routes on 2026-07-30. Tavily could not independently extract the exact eBay or Sphere Cube destinations, recorded as WF-044 and WF-045, so confirm current stock before ordering. A user-supplied 5 V micro-USB supply is required; the SD card, serial cable, and computer-specific adapters are not included.

Sources
  • Commodore 64 Bus/interface
  • General PC hardware Bus/interface
AvailableChecked Jul 27, 2026HxC SD Floppy Emulator Familyby HxC2001 and Lotharek

Replaces compatible 34-pin floppy drives with read/write disk images on SD or SDHC media.

All fourteen Rev C, Rev F, and MAX hardware variants exposed current login-or-register-to-buy paths on 2026-07-27. Rev C and Rev F use a standard floppy 5 V supply; the manual specifies at least 400 mA and says the 12 V line is unused. MAX accepts either 5 V over Micro-USB or 7-12 V center-positive DC power. Verify pin 1, drive-select jumpers, cable twists, voltage, and physical fit before connection: some computers reverse the usual 5 V and 12 V floppy-power positions, and incorrect power can damage both emulator and host. The firmware reads and writes supported images but does not reproduce variable-bit-rate protection completely; IPF and STX support is partial.

Sources
  • General PC hardware Bus/interface
  • Atari 1040ST Stated family
  • Amiga 1000 Stated family
  • Amiga 500 Stated family
  • Amiga 500 Plus Stated family
  • Amiga 600 Stated family
  • Amiga 1200 Stated family
  • Amiga 3000 Stated family
  • Amiga 4000 Stated family
  • Amstrad CPC 6128 Exact model
  • Amstrad CPC 6128 Plus Stated family
  • Amstrad ZX Spectrum +3 Exact model
AvailableChecked Jul 27, 2026HxC Slim SD Floppy Emulator Familyby HxC2001 and Lotharek

Adds read/write SD floppy emulation in compact 34-pin and 26-pin FPC forms.

All five Lotharek Slim variants exposed current login-or-register-to-buy paths on 2026-07-27. Choose the 34-pin HE10 or 1 mm 26-pin FPC version for the host; the 26-pin form requires the manual's ID0A setting. Supply regulated 5 V and verify the host connector, voltage, pin 1, drive select, cable, and mounting before connection. The manual specifies at least 300 mA and a 500 mA maximum figure. The firmware reads and writes supported images but does not reproduce variable-bit-rate protection completely; IPF and STX support is partial.

Sources
  • General PC hardware Bus/interface
  • Atari 1040ST Stated family
  • Amiga 1000 Stated family
  • Amiga 500 Stated family
  • Amiga 500 Plus Stated family
  • Amiga 600 Stated family
  • Amiga 1200 Stated family
  • Amiga 3000 Stated family
  • Amiga 4000 Stated family
  • Amstrad CPC 6128 Exact model
  • Amstrad CPC 6128 Plus Stated family
  • Amstrad ZX Spectrum +3 Exact model
AvailableChecked Jul 27, 2026IDE LeyLinesby Boris Krizma / Lotharek

Buffers and expands an Amiga 600 or 1200 IDE interface for as many as four CompactFlash, SD, hard-disk, optical, or ZIP devices.

The product exposed a login-or-register-to-buy path on 2026-07-27 and includes the main and adapter boards, not storage media. Two CompactFlash or SD-to-CF devices can be unreliable: the seller says the master must be slower than the slave or a device may disappear and a partition may be damaged. Optical and ZIP operation requires IDEFix97, and some CF combinations are inherently incompatible.

Sources
  • Amiga 600 Exact model
  • Amiga 1200 Exact model
AvailableChecked Jul 30, 2026IRQHack64 and IRQHack IIby Nejat Dilek, Ozay Turay, and Gotek Retro

Arduino-based C64 cartridge family for fast PRG loading from SD storage or a serial connection.

Gotek Retro lists IRQHack II at EUR 25 including its housing and provides a current order-interest form. The form offers an IRQHack II package with a populated SD card but explicitly has no stock management or availability guarantee and ships only within Europe, with non-EU European destinations handled case by case. Confirm stock and included media before ordering.

Sources
  • Commodore 64 Exact model
Build itChecked Jul 24, 2026LisaFPGAby Alex Anderson-McLeod

Reimplements the Lisa 1 and Lisa 2/5 as an open FPGA system with HDMI, USB input, and SD-backed ProFile storage.

The complete JCM first production run was out of stock on 2026-07-24, with a notification form for a planned second run. The project provides source code and PCB files for DIY builds. A complete setup also needs suitable USB-C power, a microSD card, a 1080p HDMI display, and a supported keyboard and mouse. Onboard floppy emulation does not yet work. Optional original Twiggy-drive support requires the separate breakout and remains untested; JCM showed three breakout boards in stock.

Sources
  • Apple Lisa 1 Exact model
  • Apple Lisa 2/5 Exact model
AvailableChecked Jul 24, 2026MacSDby YMK Devices

Multifunction 50-pin SCSI-2 device that emulates hard disks and CD-ROM drives from SD or MMC media.

The Tindie page exposed quantity and CD-audio-jack selectors with a current View Options and Buy path on 2026-07-24. Its destination-dependent shipping messages were inconsistent, so buyers should confirm shipping for their country.

Sources
  • Macintosh internal 50-pin SCSI Bus/interface
  • Macintosh SE/30 Bus/interface
  • General PC hardware Bus/interface
Build itChecked Jul 27, 2026Meatloafby Jaime Idolpx

Emulates Commodore IEC devices and loads files from local flash, an SD card, or network servers over Wi-Fi.

The project provides source, several ESP32 hardware profiles, build instructions, and a browser-based firmware flasher. No direct retail source was verified, so builders must select matching hardware and firmware before connecting it to a computer.

Sources
  • Commodore 64 Exact model
  • Commodore 128 Exact model
  • Commodore VIC-20 Exact model
  • Commodore Plus/4 Exact model
Build itChecked Jul 27, 2026Micro-PETby Andre Fachat

Recreates several Commodore PET models on a modern single board with a faster 65816, expanded memory, color VGA graphics, USB input, and SD storage.

No current assembled seller was verified. Revision 3.0A has public GPL-3.0 hardware files, but it is an advanced build with fine-pitch surface-mount parts, separately programmed FPGA and boot firmware, and dependencies across several repositories. The family documentation warns that boards, bills of materials, and firmware are moving to newer video timing and says to contact the maker before building.

Sources
  • Micro-PET Exact model
Build itChecked Jul 27, 2026Original SDrive and SDrive NUXXby C.P.U. and nuxx.net

Emulates writable Atari XL and XE floppy drives from SD storage using the original ATmega8 SDrive design or the NUXX packaging variant.

The original GPL-3.0 hardware, firmware, Atari-side software, documentation, and source remain public. Its 2009 documentation specifies cards up to 2 GB with FAT16, while the repository also contains a later 2012 SDHC-supporting source revision; match the firmware, media setup, and documentation deliberately. The NUXX archive is frozen as of 2020 and says its function is identical to original SDrive, but adds a different PCB, enclosure, connector options, and optional STK200-style parallel-port programmer. No current assembled seller was verified.

Sources
  • Atari 600XL Stated family
  • Atari 800XL Stated family
  • Atari 1200XL Stated family
Find usedChecked Jul 27, 2026petSD+by Nils Eilers and petSD+ contributors

Discontinued SD-card mass-storage device for Commodore PET computers with an IEEE-488 bus.

Manufacturing and new orders ended on 2021-02-01. The project still publishes hardware notes, a parts list, assembly instructions, firmware, and user documentation, but a complete current PCB-fabrication package was not verified. Look for a used unit or an original board or kit.

Sources
  • Commodore PET series Stated family
AvailableChecked Jul 24, 2026Pi Pico MicroSD Card Moduleby Extreme Kits

Replaces the RC2014 CompactFlash storage module with microSD for CP/M 2.2.

Current kits are offered for Standard or Enhanced Bus, with the surface-mount microSD socket loose or preinstalled. The Standard Bus version needs the supplied jumper lead to connect /WAIT to the CPU module. The vendor page says RomWBW support is forthcoming, so this record only claims CP/M 2.2 support.

Sources
  • RC2014 modular systems Stated family
AvailableChecked Jul 25, 2026Pi1541by Pi1541 project

Cycle-exact Commodore 1541 disk-drive emulation using a Raspberry Pi and SD-card disk images.

Retro Electronics listed one assembled Option B Pi1541 Hat in stock on 2026-07-25. The Hat is the only supplied part; add a supported Raspberry Pi, SD card, serial cable, legal drive ROM, quality USB cable, and at least a 2.5 A power supply. The official project does not support Raspberry Pi 4 or 5.

Sources
  • Commodore 64 Exact model
  • Commodore 128 Exact model
  • Commodore VIC-20 Exact model
  • Commodore Plus/4 Exact model
AvailableChecked Jul 15, 2026PicoMEMby PicoMEM project

Current multifunction 8-bit ISA card that adds emulated storage, memory, networking, and USB or SD-connected devices to PC/XT-class computers.

Sources
  • ISA expansion boards Bus/interface
  • IBM Personal Computer 5150 Bus/interface
  • IBM Personal Computer XT 5160 Bus/interface
Check statusChecked Jul 27, 2026RM 800XLby Revive Machines

Reinterprets the Atari 800XL with RISC and FPGA processors, original-style peripheral connections, HDMI, USB storage and controllers, SD storage, and USB-C power.

The maker still says the RM 800XL will be available very soon, but no order, reservation, shipping, or public build path was verified on 2026-07-27.

Sources
  • RM 800XL Exact model
Build itChecked Jul 24, 2026SC734 MicroSD Moduleby Small Computer Central

Adds simple bit-banged microSD storage with RomWBW support.

The project supplies a schematic, Gerbers, PCB design files, and kit or bare-PCB paths. Support is included in RomWBW v3.5; RomWBW v3.4 needs SDENABLE enabled in the RCBus_std configuration. Small Computer Monitor does not support it.

Sources
  • RC2014 modular systems Bus/interface
AvailableChecked Jul 27, 2026SCSI2SD V5 Familyby SCSI2SD project and resellers

Retired family of SD-backed SCSI drive emulators that includes internal 50-pin and direct-attach DB-25 hardware.

Upstream describes SCSI2SD V5 and V6 as permanently retired. SamplerZone nevertheless exposed an Add to Cart path for a cased v5.5 at $129.95 on 2026-07-27, including configured microSD media and optional HD50 or Centronics-50 adapters. Treat v5.1 as a used-market mechanism upgrade and confirm reseller fulfillment for v5.5. The documentation hub lists v4.8.4 from 2019 as the latest firmware for both versions. V5.5 has fixed termination and must be last on its chain; hosts without DB-25 termination power need USB power.

Sources
  • Macintosh external DB-25 SCSI Bus/interface
  • Macintosh LC 475 Exact model
  • Commodore 64 Bus/interface
  • Commodore 128 Bus/interface
AvailableChecked Jul 30, 2026SD2IEC Familyby sd2iec contributors and hardware makers

Family of IEC storage devices that lets supported Commodore computers access files and disk images on SD or other removable media.

Retro Lemon listed its user-port-powered C64, C128, VIC-20, and SX-64 variant in stock at GBP 34.17 on 2026-07-27, and Sordan exposed a current Buy now path for its combined SD2IEC and Tapecart variant. PolyPlay's plain external Sordan Micro device and Retro Electronics' internal board were out of stock, while the RetroFletch backplane seller was on a break. A complete open C64 SD2IEC LP hardware build is also available. Variant power, connectors, controls, and firmware configuration differ. The official firmware site says 0.x firmware is obsolete and warns that newer-dated bootloaders are not necessarily safer or better.

Sources
  • Commodore 116 Exact model
  • Commodore 16 Exact model
  • Commodore Plus/4 Exact model
  • Commodore 64 Exact model
  • Commodore 128 Exact model
  • Commodore SX-64 Exact model
  • Commodore VIC-20 Exact model
Sold outChecked Jul 27, 2026SD2PET Futureby Tynemouth Software and The Future Was 8bit

External SD-card storage device that plugs into the IEEE-488 port of supported Commodore PET and CBM computers.

TFW8b marked the product as restocking with an expected shipping date of April 2026, but that estimate had passed and no unambiguous current Add to Basket path was exposed on 2026-07-27. Treat it as temporarily unavailable until the seller updates the listing.

Sources
  • Commodore PET series Stated family
Sold outChecked Jul 24, 2026SDFloppy IIby A2Heaven

Emulates a Disk II floppy drive with disk images stored on an SD card.

The assembled package was out of stock on 2026-07-24. It requires a compatible Disk II interface card and does not replace that controller.

Sources
  • Apple II Stated family
  • Apple II Plus Stated family
  • Apple IIe Stated family
Sold outChecked Jul 24, 2026SDisk2 Floppy Emulatorby Koichi Nishida and later contributors

SD-card floppy emulator for Apple II-series computers using an Apple II Disk Interface Card.

Retro Electronics marked the assembled device out of stock on 2026-07-24. The SD card, 20-pin cable, and Apple II Disk Interface Card are not included.

Sources
  • Apple II Stated family
  • Apple II Plus Stated family
  • Apple IIe Stated family
AvailableChecked Jul 27, 2026SDrive-Simple-II Familyby MyTek, Dropcheck, and Lotharek

Provides open internal and currently assembled external SD-based SIO disk-emulator variants for Atari 8-bit computers.

Lotharek exposed a login-or-register-to-buy path for SD Drive Mini on 2026-07-27, and Retro Lemon also listed it with pricing. It plugs directly into SIO, uses a FAT32 microSD card and SDRIVE.ATR, and provides two buttons plus LEDs for selecting four drive slots. The separate open SDrive-Simple-II build still requires PCB assembly, ATmega328P programming, and an internal SIO connection. Its documented firmware supports cards up to 32 GB and ATR and XEX files, but not CAR, ROM, ATX, XFD, or CAS files, and it has no control for swapping disks in a multi-disk title. The former SDriveXEL assembled source and exact public build package remain unavailable.

Sources
  • Atari 400 Stated family
  • Atari 800 Stated family
  • Atari 600XL Stated family
  • Atari 800XL Stated family
  • Atari 1200XL Stated family
  • 1088XEL Exact model
DiscontinuedChecked Jul 27, 2026SIDE2 and SIDE3 Cartridge Familyby Sebastian "Candle" Bartkowicz / FlashJazzCat / Lotharek

Adds cartridge-based CompactFlash or SD storage, SpartaDOS X, a real-time clock, and loader functions to Atari 8-bit systems.

Lotharek marks both generations discontinued. SIDE2 needs at least 128 KB for its FDISK workflow, and full ATR loading requires Ultimate 1MB. Some systems need a faster 74F08 or buffered O2 timing path. Lotharek ended SIDE3 sales because it could not supply firmware that worked reliably across all computers; Revision 3.2 uses a Gowin FPGA, needs its matching firmware and programming path, and does not accept the older CPLD updates. Identify the exact hardware and firmware revision before buying or flashing a used cartridge.

Sources
  • Atari 8-bit cartridge hardware Bus/interface
AvailableChecked Jul 27, 2026SIO2SDby Jakub Kruszona-Zawadzki and contributors

Emulates Atari 8-bit disk drives from SD or MMC cards through the SIO port.

Lotharek offered the Biggus Dickus, metal-cased XL and XE, and color variants through login-to-buy paths on 2026-07-27. The metal-cased versions include an SIO cable, while the base Biggus Dickus listing includes neither cable nor SD card; other listings bundle those accessories with the same hardware. The official project also publishes Eagle schematics and boards plus firmware, making a DIY path possible. Upstream firmware reached 3.3 in 2023, while Lotharek says its assembled versions use customized 3.1 RC2 firmware, so do not assume identical features without checking the installed version.

Sources
  • Atari 400 Bus/interface
  • Atari 800 Bus/interface
  • Atari 600XL Bus/interface
  • Atari 800XL Bus/interface
  • Atari 1200XL Bus/interface
AvailableChecked Jul 27, 2026SmartDisk IIby vibr77 and innoelement

Emulates Disk II, UniDisk 3.5, and SmartPort storage from an SD card with an STM32F411.

The project README linked a current assembled eBay listing on 2026-07-27 and also publishes a complete build path. An innoelement assembled variant showed six units on Tindie, but that page simultaneously displayed a shipping rate and said it did not ship to the United States; confirm checkout availability before relying on it. Match the board revision, bootloader, and firmware: bootloader 0.15 has an Apple IIgs SmartPort problem, and boards older than Revision 3 need a trace modification for Apple IIc or IIgs use. Use a quality FAT32 SD card with 32 KB clusters. Never connect an ST-Link programmer while either USB or the Apple II powers the board.

Sources
  • Apple II Plus Exact model
  • Apple IIe Exact model
  • Apple IIc Exact model
  • Apple IIgs Exact model
AvailableChecked Jul 24, 2026SPIISD V2by Infinity Products and kerokero5150

Provides SmartPort-compatible SD-card hard-drive emulation with an OLED display and button controls.

The standard and limited-edition pages listed current configurations without an out-of-stock marker on 2026-07-24. The limited shell version is explicitly a finite-quantity assembled variant of the same SPIISD V2 family.

Sources
  • Apple II Plus Exact model
  • Apple IIe Exact model
  • Apple IIc Exact model
  • Apple IIc Plus Exact model
  • Apple IIgs Exact model
AvailableChecked Jul 24, 2026Stratos SD-to-SCSI Adapter Familyby Stratos Technology

SD-card storage adapters for notebook SCSI, internal 50-pin SCSI, and external DB-25 SCSI connections.

The standalone PowerMonster, AztecMonster, and SusanoMonster pages exposed current Add to cart controls on 2026-07-24. The external PowerMonster with BakMonolith kit was out of stock. Mac OS installations need suitable third-party formatting software. Hot swapping works only when the host operating system supports removable media and may require explicit unmount and mount operations.

Sources
  • Macintosh internal 50-pin SCSI Bus/interface
  • Macintosh external DB-25 SCSI Bus/interface
  • Macintosh Plus Exact model
  • Macintosh SE/30 Exact model
  • Macintosh Portable Exact model
  • Macintosh PowerBook 140 Stated family
  • Macintosh PowerBook 145 Stated family
  • Macintosh PowerBook 160 Stated family
  • Macintosh PowerBook 165 Stated family
  • General PC hardware Bus/interface
AvailableChecked Jul 27, 2026Tapuinoby Tapuino project

Arduino-based SD-card datasette emulator family for Commodore cassette ports, with TAP writing on the Mini variant.

Retro Electronics listed one full-size Tapuino and two Tapuino Mini units in stock on 2026-07-27. An SD card is not included, and the required C16/Plus/4 cassette-port adapter is excluded.

Sources
  • Commodore 64 Exact model
  • Commodore 16 Exact model
  • Commodore VIC-20 Exact model
  • Commodore Plus/4 Exact model
  • Commodore PET series Stated family
Build itChecked Jul 27, 2026TCBM2SDby Maciej YTM/Elysium Witkowiak

Adds SD mass storage to Commodore 264-series computers and can replace the paddle cartridge in a real 1551 drive.

The repository provides Gerbers, firmware, hardware instructions, and release files sufficient for a DIY build. The maker invites requests for a completed unit but does not advertise standing stock. Disk images are read-only, and the device does not reproduce a 1551 exactly. When a TCBM cable is fitted, both specified ground pins must be connected as documented.

Sources
  • Commodore 16 Exact model
  • Commodore 116 Exact model
  • Commodore Plus/4 Exact model
AvailableChecked Jul 27, 2026TeensyROM+by Travis' Sensorium

Combines ROM and program loading, MIDI, Ethernet, NFC launching, remote control, a real-time clock, and REU functions in a Teensy 4.1 cartridge.

The maker's Lectronz store showed six fully assembled revision 0.4 units at USD 64.00 on 2026-07-27. The programmed Teensy 4.1 and case are included. A CR1225 battery is included only with United States shipments, and an SD card or USB drive is needed for content beyond the built-in files.

Sources
  • Commodore 64 Exact model
  • Commodore SX-64 Exact model
  • Commodore 128 Exact model
  • Commodore 64 Ultimate Exact model
Sold outChecked Jul 27, 2026Turbo Chameleon V2by Individual Computers

Combines a C64 accelerator, VGA output, REU and GeoRAM memory, SD storage, dual 1541 emulation, input adapters, and cartridge emulation in one FPGA cartridge.

Individual Computers listed Turbo Chameleon V2 out of stock at EUR 235.44 on 2026-07-27. The official firmware remains in beta, with current releases and known bugs maintained in the product wiki. A CR1220 battery, networking card, docking station, cables, power supply, keyboard, and monitor are not included unless separately stated.

Sources
  • Commodore 64 Exact model
  • Commodore SX-64 Exact model
Build itChecked Jul 27, 2026Ulti-PETby Andre Fachat

Builds an integrated modern PET-compatible computer with selectable PET models, accelerated operation, enhanced color video, storage, audio, and current input.

No current assembled seller was verified. Revision 1.3A has public GPL-3.0 hardware files, but a build requires fine-pitch surface-mount assembly, separate FPGA and ROM projects, and programmed devices. The family documentation warns that boards, bills of materials, and firmware are moving to newer video timing and says to contact the maker before building.

Sources
  • Ulti-PET Exact model
AvailableChecked Jul 27, 2026UltraSatan Familyby Jookie / Lotharek

Replaces an Atari ACSI hard disk with SD or microSD media in external, direct-plug, or internal Mega ST-family forms.

The internal, cased external, acrylic-case, and Mini pages exposed order paths on 2026-07-27. No form includes storage media. The current grey cased and internal revisions use USB-C, while the acrylic and Mini pages specify Micro-USB; a 5 V phone charger is not supplied. The cased units need a separately sold DB19-to-IDC20 ACSI cable, the Mini plugs directly into ACSI, and the internal unit needs a separately sold Mega ST or Mega STE adapter. The current cased page contains an older Micro-USB FAQ despite its revision notice saying USB-C. Older TOS versions can be slower or unsafe with DOS-compatible media, and some Atari DMA circuits or modern high-capacity card pairs need the documented troubleshooting or clock-capacitor fix. The optional DUCKBILL flasher requires a direct, bidirectional PC parallel port and Windows XP DOS console.

Sources
  • Atari 1040ST Stated family
  • Atari 520STE Stated family
  • Atari 1040STE Stated family
  • Atari Mega ST Exact model
  • Atari Mega STE Exact model
  • Atari TT030 Exact model
Find usedChecked Jul 27, 2026VIC-20 Final Expansion 3by Diddl, e5frog, and community

Vintage VIC-20 multifunction cartridge combining configurable RAM, flash storage, SD2IEC storage, a real-time clock, and a launcher menu.

Historic Revision 11 production batches sold out. No current primary order path or complete, current fabrication package was verified on 2026-07-27, so look for a used unit and confirm its revision and condition.

Sources
  • Commodore VIC-20 Exact model
Sold outChecked Jul 14, 2026wDrive Disk Drive Emulatorby Mfa2 Workshop

Uses an SD card to emulate Apple II floppy and SmartPort devices from common floppy and hard-disk image formats.

The CT6502 shop marked wDrive out of stock on 2026-07-14. Check the direct product page for a restock.

Sources
  • Apple IIe Exact model
AvailableChecked Jul 24, 2026ZuluIDE V2by Rabbit Hole Computing

Emulates IDE or ATAPI hard disks, CD-ROMs, Zip 100 drives, and removable media from image files on an SD card.

Rabbit Hole Computing marked its Compact and Hybrid V2 listings sold out on 2026-07-24. The project's official seller directory linked to AmigaKit, whose ZuluIDE V2 page still offered an Add to Cart path that day. Confirm the connector and DAC variant before ordering.

Sources
  • General PC hardware Bus/interface