To Program the upper 4 keys :

1.  Entering programming mode - Press down and hold 'Num Lock' and press
    the keys you want to program.  The 'Num Lock' LED will be flashing when
    entering the programming mode.

2.  Inputting the characters to be programmed - with the separate standard
    keyboard connected,  you can enter the characters string up to
    24 characters.

3.  Exiting from programming mode -  exit the programming mode by pressing
    the 'Num Lock' key again.

4.  The newly programmed code / string will be preserved in the memory of
    the keypad even the power off.

5.  To restore the keypad to its default factory settings,  press and hold
    the 'Num Lock', '-' and 'Enter' keys simultaneously.

一定要直接接在主機板上（無法轉USB）
需與其他PS/2鍵盤串連才能設定程式化按鍵