PS/2 Keyboard (IBM Thinkpad) Y adapter

pinout

This adapter will enable you to use a keyboard and mouse at the same time. For IBM Thinkpad computer, may work with other computers

6 pin MINI-DIN male (PS/2 STYLE) connector  to the Computer

Computer Keyboard Mouse 1 2 - 2 - 1,2 3 3 3 4 4 4 5 6 5 6 - 6

6 pin MINI-DIN female (PS/2 STYLE) connector  to the keyboard & mouse

Attention! Possible not correct!

Source:www.pinouts.ru