Macintosh SE/30 upgrades

Adds external VGA to an SE/30 or IIsi, with selected SE/30 variants also driving the internal CRT in grayscale.

For this system (exact model): External VGA cards support black and white through thousands-color modes depending on model. GS and selected HC cards can add internal grayscale through a high-voltage installation. The maker strongly recommends recapped and adjusted logic, analog, and power-supply boards, especially when stacking PDS cards.

Juicy Crumb showed the complete $949 SE/30 Greyscale Kit out of stock on 2026-07-27, and the developer page exposed no separate public order path for current external-only cards. The nonstandard 1024 by 768 at 54 Hz mode will not sync on every display. Extra PDS cards can cause instability, and the maker warns that adapting VGA output to a vintage Apple CRT may damage the monitor.

Bidirectionally converts keyboards and mice between Apple's ADB interface and modern USB HID.

For this system (bus/interface): Connects to the SE/30's 4-pin mini-DIN ADB bus so a standard USB keyboard or mouse can be used with the Mac.

The BMOW store showed the Wombat as sold out on 2026-07-14. Check the direct product page for a restock.

Single 16 MB, 60 ns, non-parity fast-page-mode SIMM for specifically listed 30-pin Macintosh systems.

For this system (exact model): The seller explicitly lists the SE/30 and requires four modules for Macintosh use. Confirm the installed ROM and system software can address the intended total memory.

The Artmix product page reported out of stock on 2026-07-24. Check the direct page for a restock and confirm the exact computer's ROM, addressing, bank-population, and clearance requirements.

Visualizes Macintosh PDS signals with LEDs and provides a pass-through plus a right-angle test connector.

For this system (exact model): The product page explicitly names the Macintosh SE/30. Use it as an external troubleshooting tool and verify slot IDs, power load, physical clearance, and card-to-card compatibility before attaching two PDS devices.

The Juicy Crumb page showed BlinkenPDS in stock on 2026-07-24. It is a bench development tool and is not intended for permanent in-case use; the maker says it fits poorly inside a computer. The second connector does not establish that arbitrary pairs of PDS cards are electrically compatible.

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

For this system (exact model): The official compatibility list names the SE/30. A machine using a third-party ROM SIMM may need a System file modification if it stops at the initial logo while booting. One internal Pico W installation provided working Wi-Fi when mounted high in the hard-drive bay, but reception was sensitive to position and became practically unusable at the rear of the metal chassis; treat antenna placement as installation-specific.

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.

Runs a 68030 CPU and optional 68882 FPU at 47 MHz in SE/30 and socketed modular Macintosh configurations.

For this system (exact model): Designed for the Macintosh SE/30 and offered in PGA-socket and PDS variants. Booster 2.0 supports IIsi-based ROMs and custom ROM images without a driver, but its known PDS-card incompatibility list includes ColorBoard/264, Shiva EtherPort SE30, Radius FPD, and Synchr030.

Juicy Crumb showed a $309 to $359 Add to cart path for Booster 2.0 on 2026-07-27. Choose the exact PDS or PGA-socket variant for the host. Booster 1.x is superseded but its original-card schematic and GAL archive remain available. PDS-card compatibility differs between generations, and System 7.5 or later can produce sound glitches on 1.x cards.

Turns a spare compact-Mac logic board into a small desktop computer with modern power, display, and storage hardware.

For this system (exact model): The SE/30 logic board fits, but the printable project's tall ROM and RAM SIMMs prevent simultaneous use of its internal floppy-drive or BlueSCSI positions. The maker recommends external storage for that configuration.

On 2026-07-24 JCM showed 5 printed 128K/512K cases, 3 Plus cases, 2 SE/SE30 cases, and 5 Classic/Classic II cases in stock. This is an enclosure, not a complete computer: supply a working logic board, power and video electronics, storage, input devices, display, cabling, and other desired parts. GutBomb's printable design is CC BY-NC-SA and does not cover the separate electronics.

Replaces missing or broken case-mounted programmer's switches on compact Macintosh computers.

For this system (exact model): The transparent MacEffects variant explicitly supports the Macintosh SE/30 and provides reset and programmer/debug access. It is separate from the Greeny-switch for earlier compact Macs.

Both product pages said Sold out or Out of Stock on 2026-07-27. The Greeny-switch resin can break if excessive force is applied. Choose the model-specific variant; neither seller establishes cross-family interchangeability between the early compact-Mac and SE-family switch assemblies.

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

For this system (exact model): Macintosh floppy emulation is supported. HD20 hard disk mode on an SE/30 requires a Mac ROM-inator II replacement ROM.

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.

Open 64-pin ROM SIMM with selectable 32-bit-clean System 6 and System 7.1 ROM disks for six 68030 Macintosh models.

For this system (exact model): The SE/30 is explicitly supported. All four supplied images work except that the stock IIx image is limited to the SE/30, IIx, and IIcx subset. Check accelerator compatibility before relying on the custom ROM.

The assembled Tindie module was out of stock on 2026-07-24 and had been sold out since May 7, 2025. Hardware, software, and fabrication files remain public. Most tested 68030 accelerators work, but some 68040 accelerators do not; select the stock IIsi or IIx ROM when the custom image is incompatible. Only 8 MB of the 16 MB flash can be selected at once, with the computer powered off before changing the switch.

Provides two switchable 8 MB flash banks that can be programmed over USB without a separate ROM programmer.

For this system (exact model): Explicitly supports the SE/30 ROM SIMM socket. Some stock sockets have fit or reliability problems and may require the SIMM contact pads to be thickened with solder.

Breaks out compact Macintosh power rails and video signals for custom logic-board projects.

For this system (exact model): Exposes the SE/30 logic board's J12 power and video connections for CatMac-style or test-bench use. It requires separate power wiring and compatible external video hardware.

JCM showed 17 SE/SE30 units and 6 Classic/Classic II units in stock on 2026-07-24. These are custom conversion and test-bench parts, not drop-in upgrades for intact computers. The two Macintosh groups use different J12 signal mappings, so use only the version intended for the installed logic board. JCM recommends 16 or 18 gauge leads with a modern ATX supply on the SE-family board.

Replaces the stock ROM SIMM with a 32-bit-clean flash ROM, bootable ROM disk, and HD20 support.

For this system (exact model): Replaces the SE/30 ROM SIMM, enables native 32-bit addressing and HD20 support, and can allow up to 128 MB RAM. Some sockets need a fit shim.

The BMOW store showed the Carbon SIMM as sold out on 2026-07-14. It is incompatible with DayStar PowerCache and Turbo accelerators.

Actively converts classic Macintosh DB-15 video sync signals for use with compatible VGA displays.

For this system (bus/interface): Relevant only when the SE/30 has an expansion video card with a standard Macintosh DB-15 output; it does not convert the built-in monochrome display.

The BMOW store still showed the $39 Sync-inator as sold out on 2026-07-27. A monitor must still support the source resolution and scan rate.

Replacement compact-Mac fan rated at 24 CFM, approximately twice the airflow MacEffects attributes to the stock fan.

For this system (exact model): The product title explicitly names the Macintosh SE/30 and includes an internal four-pin Molex power adapter. The seller describes fit in its clear case.

The MacEffects page said Sold out on 2026-07-27. The title names the Macintosh SE and SE/30, but the detailed fit claim is framed around MacEffects clear cases; confirm mounting and noise expectations before using it in an original enclosure.

Replaces the internal speaker in a Macintosh SE or SE/30 with a functional nickel-plated unit using a transparent cone.

For this system (exact model): The seller explicitly identifies the speaker as a functional Macintosh SE/30 replacement. Confirm its mounting and electrical details before installation.

The product page said Sold out on 2026-07-27. The seller does not publish impedance, power rating, dimensions, connector details, or installation instructions, so confirm those details before substituting it in an original enclosure.

New replacement for the analog-board to logic-board signal cable in four compact Macintosh models.

For this system (exact model): Replacement analog-to-logic-board cable for an SE/30. Use only with the matching SE-family board set; do not connect it to Classic-family parts.

The JCM page showed 17 units in stock on 2026-07-24. Never use the cable to combine an SE or SE/30 board with a Classic or Classic II board: the identical-looking connectors carry signals on different pins, and mixing the two groups will damage the computers.

Redesigns the SE/30 logic board as a buildable replacement with Gerbers, placement data, a BOM, and recreated programmable logic.

For this system (exact model): This is a complete SE/30 logic-board recreation rather than an expansion card. Low-power ATF16V8B devices do not work for the recreated PALs, and ATF16V8C devices may also be problematic.

This is a fabrication package, not an assembled order path. The published Gerbers were generated for JLCPCB and may need adjustment for another fabricator. Low-power ATF16V8B programmable-logic parts do not work, and ATF16V8C parts may also cause problems. The build still depends on Apple custom ICs sourced from donor hardware.

Converts raw compact-Mac video to VGA, with optional power integration for bare logic-board projects.

For this system (exact model): Standalone MacPicoVid and SE-COMBO explicitly list the SE/30 for removed-board projects. SE-TOPPER support is experimental: its second RAM bank must remain empty and capacitor UC8 may need Kapton tape for clearance. Do not infer compatibility with the original internal display path.

On 2026-07-24 JCM showed 11 onboard-VGA and 41 Extended MacPicoVid boards, 56 MacPicoVid SE-COMBO boards, 2 IDC12 boards, 19 SE-TOPPER boards, 46 128K/512K/Plus adapters, and 32 Classic adapters in stock. Standalone boards require separate 5 V USB power and host wiring. The power-integrated products are for a removed logic board or custom chassis, not a drop-in external-video port for an intact computer.

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

For this system (bus/interface): The SE/30 provides internal SCSI, while the MacSD manual names most SCSI-equipped Macs rather than individual models. Use the internal 50-pin connection and confirm cable orientation, 3.5-inch mounting, bus termination, and SCSI termination power before installation.

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.

Replace a Macintosh ROM SIMM with reprogrammable flash for custom ROMs and, with 2 MB of flash, a bootable ROM disk.

For this system (exact model): MACSIMM and EconoSimm replace the SE/30 ROM SIMM. A suitable 32-bit-clean image removes the stock ROM's 24-bit addressing limitation; optional ROM patches can skip the long memory test or add a bootable ROM disk. EconoSimm requires a thin PCB and individual flash-chip programming.

The GGLABS Tindie store was taking a break on 2026-07-27, but EconoSimm remains buildable from published files. EconoSimm requires a roughly 1.2 mm PCB so it fits the ROM socket, four compatible PLCC-32 flash chips, and a standard flash programmer with a PLCC32-to-DIP adapter. Its author says the BMOW SIMM programmer may work but has not tested it. The bootable 1.5 MB ROM disk requires 2 MB of flash and a correctly prepared image.

Period 68040 accelerator originally made for a Macintosh IIci cache slot and usable in an SE/30 only through a specialized adapter.

For this system (exact model): A documented SE/30 installation uses Bolle's PDS-to-IIci adapter plus a patched INIT. The Carrera040 itself is a IIci cache-slot card, not a native SE/30 PDS card.

Use only a proven SE/30-to-IIci cache-slot adapter and the patched software. Never insert this card into a PDS slot or PDS pass-through: the connectors fit but are electrically different, and a wrong connection can destroy the accelerator.

Adds bootable CompactFlash storage through the PDS, bypassing the original SCSI implementation.

For this system (exact model): The maker explicitly supports the SE/30. Its version has a right-angle top PDS connector and normally uses slot ID D. One additional PDS card may be stacked; follow the maker's chassis-tab insulation warning.

The maker states that production is on hold with no ETA. The public support repository contains firmware and installation files, but no DIY hardware fabrication package.

Open, reversible Pico ATX power-adapter family for the Macintosh 128K, 512K, Plus, SE, and SE/30.

For this system (exact model): The SE/30 adapter replaces the original removable PSU module while retaining the analog board. Use a quality PicoPSU and sufficiently rated 12 V brick, do not bypass its fuses, perform the documented short and rail-voltage checks, align the analog-board connector correctly, and observe CRT high-voltage precautions.

On 2026-07-27, the 128K/512K/Plus listing showed order controls at $29.99 and the SE/SE30 listing showed order controls at $34.99. Both offered kit and assembled choices. Their United States shipping sections simultaneously displayed rates and a does-not-ship warning, so confirm destination availability at checkout. A suitable PicoPSU and adequately rated 12 V center-positive power brick are separate parts.

Connects modern USB HID keyboards and mice to Macintosh computers through Apple Desktop Bus.

For this system (bus/interface): The SE/30 provides Apple Desktop Bus for its keyboard and mouse, and Rabbit Hole specifies QuokkADB for any ADB-equipped Macintosh. The optional power button applies only to Macs that support ADB soft power.

HIDHopper Base, Base with USB Hub Hat, and Hub Hat-only selections could be added to the JCM cart on 2026-07-24. The assembled QuokkADB Rev. 2022g remained sold out, while its Raspberry Pi Pico Community Edition remained buildable. HIDHopper's Hub Hat requires external USB-C power, must be power-cycled between Macintosh starts, and can otherwise exceed the host's ADB power budget.

Mounts a BlueSCSI or another 50-pin SCSI device directly above a Macintosh internal SCSI connector.

For this system (exact model): The open project explicitly lists the SE/30. The riser receives power from the SCSI bus.

The current store page listed partly assembled and complete options without an out-of-stock marker on 2026-07-24. The maker repository also provides assembly material and Gerbers.

Replaces the Macintosh SE/30 CRT and analog board with an 8.4-inch color LCD driven by a 30Video HC PDS card.

For this system (exact model): The kit is explicitly a drop-in Macintosh SE/30 retrofit. It uses the PDS slot and replaces the original CRT and analog board; confirm coexistence with any accelerator or other PDS hardware before installation.

The Juicy Crumb page showed the kit out of stock on 2026-07-24. Installation replaces the CRT and analog board and requires transferring the fan wires by desoldering or cutting. Compact Macintosh CRT and analog-board assemblies contain dangerous high voltages; use a qualified technician if you are not trained to discharge and service them safely.

Open hardware 10/100 Ethernet card designed around a modern controller for the Macintosh SE/30 PDS.

For this system (exact model): The SEthernet/30 hardware and driver were tested on an unmodified SE/30 under System 6.0.8, 7.1, and 7.5.5. The declaration ROM must be programmed before the system recognizes the card.

DIY 4 MB 30-pin Macintosh memory module made by transplanting DRAM from a compatible 16 MB 72-pin SIMM.

For this system (exact model): The maker explicitly describes using four modules for 16 MB or eight for 32 MB. Higher memory configurations still depend on ROM and 32-bit addressing support.

The current store listed the bare kit and optional passive-component set without an out-of-stock marker on 2026-07-24. Compatible donor DRAM is not included.

Moves an SE/30 ROM onto a PDS card, bypassing the aging ROM SIMM socket and adding a bootable 2 MB ROM disk.

For this system (exact model): Installs in the SE/30 PDS slot and requires a jumper from JP2 to a test clip on pin 27 of the UI8 GLUE chip. It occupies the PDS connector, so plan around accelerators or other PDS cards. The 32-bit-clean configuration requires System 7.x or later and at least 8 MB RAM; 32 MB or more is recommended.

The store listed the PDS ROM Card at $39 with selectable flashed-ROM and chipless configurations on 2026-07-27. The vendor does not support chipless purchases because programming and ROM preparation can be difficult. A long-term installation should replace the included test clip with a soldered jumper.

Provides a programmable 2 MB Macintosh ROM SIMM using four socketed PLCC32 flash chips.

For this system (exact model): The SE/30 is explicitly named. Prepare a legal, compatible ROM image and verify SIMM orientation before installation.

The current page offered populated and chipless versions in multiple PCB colors on 2026-07-24. Its dated notice says the red PCB alone was out of stock on 2026-04-26, with black and purple also listed.

Fanless reinforced Macintosh SE/30 power supply intended for accelerators, larger hard drives, and high-capacity memory.

For this system (exact model): The supply is designed for the SE/30 and is intended to support configurations using devices such as Turbo040 accelerators, 16 MB SIMMs, and larger hard drives. Installation involves the computer's mains power system; use appropriate service procedures.

The Artmix page reported out of stock on 2026-07-24. Keep the direct page for a possible restock.

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

For this system (exact model): The external PowerMonster with BakMonolith product explicitly names the SE/30. Confirm power, formatting software, SCSI configuration, and external connector clearance; the external bundle was out of stock when checked.

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.

Macintosh SE/30 PDS adapter for combining a supported CPU accelerator with a supported video or Ethernet card.

For this system (exact model): The maker lists DayStar Turbo040, PowerCache Universal P33 or later, and Diimo Cache accelerators plus selected Interware, Xceed, Radius, Asante, Dayna, Farallon, and Sonic PDS cards. Xceed Color30 cannot coexist with Turbo040, the Xceed grayscale adapter needs an extension cable, and DayStar Turbo601 and MicroMac products are unsupported.

The Artmix product page exposed a current Add to cart control on 2026-07-24.

PDS memory accelerator that replaces Macintosh SE/30 SIMMs with 256 MB of SDRAM and provides an unbuffered PDS pass-through.

For this system (exact model): Designed for the SE/30 PDS. Remove all motherboard DRAM SIMMs before installation. Selectable STERM and DSACK signaling supports confirmed pairings with the Interware Booster 50-SE30F and Bolle PowerCache P33 when each accelerator uses its proper SE/30 connection or adapter. Never insert a cache-slot accelerator directly into the PDS pass-through. Full 256 MB use under System 7 requires an IIsi-derived ROM. The soldered ECS tap enables two-cycle reads with the stock CPU, but provides no benefit with an accelerated CPU. Revision B address translation must use the documented jumper settings and should not be combined with the older v0.5.4 extension.

The Tindie page reported four assembled cards in stock at $297 on 2026-07-27. Its United States shipping section simultaneously showed a free rate and said the item did not ship there, so confirm destination availability at checkout. The current Rev B manual covers firmware v0.8.0. It warns against using the older v0.5.4 extension with address translation, documents a ROM-shadowing bypass for timing-sensitive accelerator functions, and says Apple Personal Diagnostics memory tests can hang or corrupt memory near completion. A cache-slot accelerator must never be inserted directly into the SE/30 PDS or the Synchr pass-through; use the correct SE/30 adapter. Three-card stacks discussed by the community remained untested.

Replaces the ball mechanism in an original Apple ADB Mouse or ADB Mouse II with an adjustable optical sensor while retaining the ADB interface.

For this system (exact model): TT Design explicitly tested the optical board on a Macintosh SE/30. Use only a supported original ADB Mouse or Mouse II shell and retain its ADB cable.

Both $72.99 variants were out of stock on 2026-07-27: the Mouse II board since May 25 and the original wedge board since July 18. Match the replacement to the exact shell and board shape before ordering. The original ADB cable is required, and installation may require moving its four wires or connector. The USB-C connector changes settings and firmware; it does not turn the mouse into a USB device.

Modern replacement power-supply boards for Macintosh SE and SE/30 Apple, Sony, and ASTEC enclosures, with assembled, DIY, Pico ATX, and separated-rail options.

For this system (exact model): Designed for Macintosh SE/30 power-supply enclosures made by Apple, Sony, or ASTEC. The optional +5 V auxiliary bypass is for high-current upgraded systems and must be wired exactly as documented. The enclosure is not included, ASTEC installation can require AC-wire work, and DIY AC/DC assembly involves dangerous mains voltage.

On 2026-07-27, the DIY AC/DC board was $22 with four left, the assembled and DIY Pico ATX boards were $89.99 and $16.99 with two left each, and 4XDC was $170 with two left. The $129 assembled universal AC/DC board had been sold out since May 27, 2026. Check the selected architecture, PSU-enclosure variant, parts included, and destination availability before ordering.

Open-firmware SCSI emulators in DB-25, internal 50-pin, laptop, and Wide SCSI form factors.

For this system (bus/interface): The product is designed for direct attachment to a DB25 SCSI port, and the SE/30 provides external DB25 SCSI. The maker says TinySCSI fits flush on compact Macs. A Pico Slim must be the final device because its termination cannot be disabled.

Rabbit Hole Computing offered current Compact RP2040, Blaster, and Wide variants on 2026-07-24. A 2026-07-27 follow-up found its mostly assembled $25 Pico Slim V1.3 PCB kit sold out, while SamplerZone exposed an Add to Cart path for a $79.95 assembled and cased Pico Slim with configured microSD media. Rabbit Hole's direct Pico2 Slim and Laptop Blaster pages were also sold out. TinySCSI was archived in January 2025, but its V1.0 and V2.0 KiCad files remain available for personal builds. A project discussion documents Wi-Fi DaynaPORT operation on a Pico Slim under System 7.5.5 with the DaynaPORT SCSI-port driver, but does not establish a minimum System version or equivalent networking support for every family variant. Connector, termination, power, speed, and initiator support vary by hardware.