BTC 5201 PS/2 Keyboard 104-Key AT Layout Windows Compatible Beige

BTC 5201 PS/2 Keyboard 104-Key AT Layout Windows Compatible Beige

The BTC Model 5201 is a full-size 104-key PS/2 keyboard in a classic beige AT form factor, connecting to the host PC via a Mini-DIN 6-pin PS/2 connector. It draws +5V at 170mA from the PS/2 port — no external power needed. The layout includes a full alphanumeric section, dedicated function row, navigation cluster, and numeric keypad, matching the standard 104-key Windows keyboard arrangement.

Specifications & What's Included

• Brand: BTC (Behavior Tech Computer)
• Model: 5201 (BTC-5201)
• Interface: PS/2 Mini-DIN 6-pin
• Number of keys: 104 (full-size AT/Windows layout)
• Input: +5V DC, 170mA
• Color: Beige
• Cable: Attached, coiled, with purple Mini-DIN 6-pin PS/2 plug
• Certifications: UL (E141419), CSA (LR99635), CE, TÜV Rheinland Type Approved
• Includes: Keyboard only — no PS/2-to-USB adapter or accessories

Applications

PS/2 keyboards like the BTC 5201 were the standard input device for desktop PCs throughout the mid-1990s to mid-2000s, connecting to the purple PS/2 port found on nearly all ATX motherboards of that era. They are still used today on older workstations, industrial PCs, server KVM switches, CNC controllers, and other embedded or legacy systems that retain a PS/2 port. Many PC enthusiasts and industrial users prefer PS/2 keyboards over USB because the PS/2 interface supports full N-key rollover (all keys register simultaneously, no USB polling delay), making it reliable for environments where simultaneous keypresses matter. BTC (Behavior Tech Computer) was a Taiwanese OEM manufacturer that supplied keyboards and input devices to major PC brands throughout the 1990s; the 5201 represents their standard AT-layout PS/2 offering from that period.