USB Non-synchronous Notebook Computer Multi Function Keypad with 19 Keys

1) Ultra thin notebook computers caps design, Aesthetic appearance.

2) Durable structure, long life

3) Non-synchronous digital input, no affection to the other keyboard

4) Compatibility: IBM, PC, AT, MAC

5) Button design: 19 bonds

6) Key trip: 3.0+- 0.3mm

7) Surcharging height: 0.25+- 0.05mm

8) Maximum pressure: 55+-5g

9) Operating temperature: 0~55?

10) Key life: 800 million and above

11) Product size: 100*140*15mm

12) OS: Windows 98 SE/ME/2000/XP/Vista Mac OS 10.4 abo