IBM 1390940 3197 102-Key Keyboard PS/2 5-Pin DIN Lexmark 1994 Model M

IBM 1390940 3197 102-Key Keyboard PS/2 5-Pin DIN Lexmark 1994 Model M

The IBM 1390940 is a 102-key keyboard manufactured for IBM by Lexmark, dated February 1994. It uses the classic buckling-spring mechanism associated with IBM's Model M family — the same high-tactile, audible-click design prized by typists and collectors. The keyboard connects via a 5-pin DIN plug on a coiled cable.

Specifications & What's Included

• Part Number: 1390940
• Compatible System: IBM 3197 Display Station
• Number of Keys: 102
• Connector: 5-pin DIN (coiled cable, attached)
• Switch Type: Buckling spring (Model M style)
• Power: +5V DC
• Manufactured for IBM by Lexmark International
• Date of Manufacture: 23-FEB-94
• ID No.: 5003857 / Plt. No.: F7 / Model M
• Country of Manufacture: USA
• Includes: keyboard with attached coiled cable and 5-pin DIN connector — no adapter included

Applications

The IBM 3197 is a display station (terminal) designed for use with IBM midrange systems, including the AS/400 and its predecessors. The 1390940 keyboard was the standard input device for these terminals in the early-to-mid 1990s, providing the full 102-key layout needed for IBM's 5250-series data-entry and application environments. The 5-pin DIN connector is the terminal-side interface used on IBM display stations of this generation — distinct from the later PS/2 mini-DIN. Today these keyboards remain sought after by vintage computing enthusiasts and collectors for their robust buckling-spring mechanism, as well as by businesses maintaining legacy AS/400 or System/36 terminal setups. A DIN-to-PS/2 or DIN-to-USB adapter is needed to use this keyboard on a modern PC.