Macintosh modem and printer serial ports

Serial peripherals and adapters for Macintosh computers with the original modem, printer, AppleTalk, or GeoPort-style serial interfaces.

Also called: Macintosh RS-422, Macintosh modem port, Macintosh printer port, Mini-DIN-8 serial, DE-9 serial

At a glance

Products listed: 1

Exact-target evidence: 0

Family/interface evidence: 1

Product types: 1

Vintage searches: 0

Directory: Serial ports

Browse everything below, or filter by product type, availability, and compatibility basis. Notes explain whether evidence names an exact target, a broader family, or only the relevant bus or interface for this platform.

Showing 1 product.

StatusProductWhat it doesLinks
AvailableChecked Jul 30, 2026WiModem232 Proby CBMSTUFF.COM
wi fimodembbshayes compatiblers 232serialfirmware updatehardware flow control

Connects supported vintage computers to Wi-Fi BBSes through an RS-232 serial port.

For this platform (bus/interface): The vendor says it was tested with Macintosh models having an AppleTalk or modem serial port. A computer-specific DE-9, Mini-DIN-8, or GeoPort cable or adapter is required; this does not include USB-only Macs.

The current Pro V2 model was in stock on 2026-07-30. It has a female DB25 connector, a color TFT screen, a printed case, faster interface buffers, and signal-state LEDs. It needs an external 5 V micro-USB supply, and the host may also need a gender changer, DB9 adapter, or correctly wired computer-specific serial cable. The older display-free and OLED WiModem232 models are discontinued and replaced by this version.

Sources
WiModem232 Pro product pageInstallation and command manual