A4Tech OP-620D Grey PS/2

Design: For left hand, for right hand
Description: Connection interface: PS/2, design: left-handed, right-handed, operating principle: optical LED, number of keys: 4, optical sensor resolution: 620 dpi
Additional Information: Double click button
Type: Mouse
Connection type: Wired
Principle of operation: Optical LED
Connection interface: PS/2
Number of keys: 4
Built-in Options: Scroll wheel
Number of programmable keys: 3
Optical sensor resolution: 620 dpi