Keyboard mouse connector
Expand the power of your ThinkPad notebook computer with a full-size keyboard. Use the Keyboard/Mouse Y-Connector to add a keyboard to your system. The connector is required to connect an external keyboard directly to your ThinkPad, and allows use of an external keyboard and mouse or other PS/2 pointing device.
Lenovo Keyboard mouse connector, Black, 2 x 6 pin mini-DIN (PS/2) - F; 1 x 6 pin mini-DIN (PS/2) - M
Lenovo Keyboard mouse connector. Product colour: Black, Connector(s): 2 x 6 pin mini-DIN (PS/2) - F; 1 x 6 pin mini-DIN (PS/2) - M