Mini USB Numeric Keypad IBM

Descriptions
Plug and Play. No drivers required
Standard USB interface
Anti-slip, drop resistance, abrasion resistance, quick response
Durable structure , Long life
Dimension 100x140x15mm
Button design 19bonds
Key trip 3.0+-0.3mm
Maxumum pressure 55+-5g
Os Windows 98./se/me/2000/xp/vista/win7/8/10/Mac os10.4 above