Atari 850 Interface Module Vintage 8-Bit Computer Expansion Serial Parallel Box

Atari 850 Interface Module for Atari 400 and 800 home computer systems. This vintage hardware expansion provides four RS-232 serial ports and one parallel printer port, allowing connection of modems and printers. The unit features a beige housing with I/O connectors, power switch, and LED indicator. Includes original power adapter, connection cable, and boxed inked ribbon accessory in the original Atari shipping box.

Brand: Atari
Model: 850
Interface: RS-232 Serial, Parallel
Compatibility: Atari 400/800
Power: 9V AC
Connectors: DB-9, 15-pin
Era: 1980s
Components: Module, Power Supply, Cable, Ribbon
Material: Plastic, Metal

Keywords: Vintage Computing, 8-Bit, Retro Tech, Home Computer, Peripheral, Serial Port, Parallel Port, RS232, 1980s Electronics, Collector, Computing History, Hardware Expansion, Atari 400 800, Rare Tech