1.3 Outside feature
1.3.1 Socket and Switch
Hardware Function
A. Switch Turn on /off the unit
B. USB Port Support "USB Converter” to update firmware
C. I/O Sockets
Expanding function, as below
D. Power indicator light When the unit charging, the light is blinking
E. GPS Antenna socket Connect Exterior GPS Antenna
F. GSM Antenna socket Connect Exterior GSM Antenna
G. SIM Card Holder Hold a SIM card
H. Three LED
GSM LED(Right), Power& tremble Led, GPS Led
J. Yellow plastic Pin
Press it to pop up the SIM Card Holder