6 pin mini-DIN male (PS/2 STYLE) connector to the computer
6 pin mini-DIN female (PS/2 STYLE) connector to the Keyboard and Mouse
IBM introduced the PS/2 interface with the Personal System/2 line in 1987, replacing the 5-pin DIN AT keyboard connector with a 6-pin mini-DIN. The standard connector carries Data on pin 1, Clock on pin 5, Ground on pin 3, and +5 Vdc on pin 4, with pins 2 and 6 normally reserved. Many late-1990s and early-2000s laptops — including Toshiba Satellite and HP OmniBook/Pavilion models — exposed a single combo PS/2 port that multiplexed both keyboard and mouse channels by using those reserved pins; this Y-adapter separates them into two standard female connectors. Mouse signals are routed straight-through on pins 1 and 5, while keyboard signals are carried on pins 2 and 6 of the computer connector, emerging on pins 1 and 5 of the keyboard female.
This adapter is tested with Toshiba Satellite 2100 CDS, 405CS notebooks. Should also work with OmniBook 2100, OmniBook 3100, OmniBook 4100, OmniBook 4110, OmniBook 4150 (13.3), OmniBook 4150 (14.1), OmniBook 510, OmniBook 6000, OmniBook 6000B, OmniBook 6000C, OmniBook 6100, OmniBook 7100, OmniBook 7150, OmniBook 900, OmniBook 900B, OmniBook vt6200, OmniBook XE3, OmniBook xe4100, OmniBook xe4400, OmniBook xe4500, OmniBook xt6050, OmniBook xt6200, Pavilion N3000, Pavilion N3390, Pavilion N3490, Pavilion N5000, Pavilion N5195, Pavilion N5200, Pavilion n5250, Pavilion N5295, Pavilion n5300, Pavilion N5350, Pavilion N5400, Pavilion N5400B, Pavilion N5400B (AMD), Pavilion N5400B XH5xx Notebooks (AMD), Pavilion N5400C, Pavilion N5401, Pavilion N5415, Pavilion N5421L, Pavilion N5425, Pavilion N5430, Pavilion N5440, Pavilion N5441, Pavilion N5450, Pavilion N5451, Pavilion N5455, Pavilion N5470, Pavilion N5474, Pavilion N5475, Pavilion n5490, Pavilion N5491, Pavilion n5495, Pavilion N5511L, Pavilion N5584, Pavilion N6100 Notebook, Pavilion N6195, Pavilion N6300 Notebook, Pavilion N6400 Notebook, Pavilion N6490, Pavilion XH176, Pavilion XH200, Pavilion XH226, Pavilion XH300 (Intel), Pavilion XH395, Pavilion XH400 (AMD), Pavilion XH485, Pavilion XH500 (AMD), Pavilion XH555 (AMD), Pavilion XH675, Pavilion xt100, Pavilion XT155, Pavilion xt300, Pavilion xt412, Pavilion ze4100, Pavilion ze4101, Pavilion ze4111s, Pavilion ze4115, Pavilion ze4123, Pavilion ze4125, Pavilion ze4140, Pavilion ze4145, Pavilion ze5100, Pavilion ze5170, Pavilion ze5185.
| 6 pin male (PS/2) connector to the Computer Pin | 6 pin female (PS/2) connector to the Keyboard and Mouse Pin | 6 pin female (PS/2) connector to the Keyboard and Mouse Pin |
|---|---|---|
| 1 | - | 1 |
| 2 | 1 | - |
| 3 | 3 | 3 |
| 4 | 4 | 4 |
| 5 | - | 5 |
| 6 | 5 | - |
Notes
The 6-pin mini-DIN (PS/2) connector uses open-collector Data and Clock lines pulled to +5 Vdc; supply voltage is +4.5 V to +5.5 V with a maximum device current of 275 mA. The combo port on affected laptops must have hardware support for the dual-channel mode — a standard single-function PS/2 port will not work with this adapter. The host port assigns the keyboard channel to IRQ 1 (via the i8042 controller) and the auxiliary/mouse channel to IRQ 12. Keyboard and mouse 6-pin mini-DIN connectors are physically and electrically identical; only the port they are plugged into determines their function.
Signals
- Data (pin 1 of mouse female / pin 2 of computer male → pin 1 of keyboard female) — bidirectional open-collector serial data; idle high; driven low-level to max 0.5 Vdc; high-level minimum 2.0 Vdc
- Ground (pin 3) — common ground, connected through to both female connectors
- +5 Vdc (pin 4) — supply voltage +4.5 V to +5.5 V; maximum 275 mA; connected through to both female connectors
- Clock (pin 5 of mouse female / pin 6 of computer male → pin 5 of keyboard female) — open-collector clock; 10–16.7 kHz; idle high; driven by device or host to synchronise data transfer