Longshine GT150 - Manual (Page 25)

EMB-M3 User`s Manual 17
Front Panel Connector
The front panel of the case has a control panel, which provides light
indication of the computer activities and switches to change the
computer status.
Keylock
For security or other purpose, short these two pins together will
disable the keyboard functions.
Keylock
Pin #
Signal Name
1 Keylock-
2 GND