
TREK-668/303 User Manual 22
5.1 Front Side Connectors
5.2 Rear Side Connectors
5.3 LED Indicator
System Reset
Button
Force the system to reboot
Power Activity
Indicator LED
When the system is in NORMAL mode, this LED will be lit
up (Red Color)
CF Activity
Indicator LED
The storage activity indicator is a green LED, and flashes to
show the activity of CF (Green Color)
WLAN Activity
Indicator LED
The WLAN activity indicator is a green LED, and flashes to
show the activity of the WLAN module. (Green Color)
This LED is controlled directly by the WLAN module.
WWAN Activity
Indicator LED
The WWAN activity indicator is a green LED, and flashes to
show the activity of the WWAN module. (Green Color)
This LED is controlled directly by the WWAN module.
GPS Activity
Indicator LED
The GPS activity indicator is a blue LED, and is used to
show GPS activity This LED is controlled directly by the
GPS chips. (Blue Color)
Storage Activity
Indicator LED
The storage activity indicator is a green LED, and flashes to
show the activity of HDD/SSD.(Orange Color)
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