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Nuvo-3100 Series User’s Manual
Copyright © 2014 Neousys Technology Inc. All Right Reserved.
Page 15 of 99
2.2.3 LED Indicators
There are four LED indicators on the front panel: PWR, HDD, WDT and IGN. The
descriptions of these four LEDs are listed in the following table.
Indicator
Color
Description
PWR
Green
Power indictor, lighted-up when system is on.
HDD
Red
Hard drive indicator, flashing when SATA HDD is active..
WDT
Yellow
Watchdog timer indicator, flashing when watchdog timer is started.
IGN
Green
Ignition signal indicator, lighted-up when IGN is high (12V/24V).
2.2.4 WLAN/WWAN LED Indicators
There are another three LED indicators on the front panel to present status of wireless
communication. Per the specification of mini-PCIe, signals of LED_WLAN# and
LED_WWAN# can be used by WIFI/3G module to indicate its communication status. These
LEDs are connected to three mini-PCIe/mSATA (with SIM) slots respectively. Once
LED_WLAN# or LED_WWAN# is de-asserted, the LED is lighted
Indicator
Color
Description
Left
Green
WLAN/WWAN LED Indicator for full-size mini-PCIe slot with SIM
Mid
Green
WLAN/WWAN LED Indicator for full-size mSATA slot with SIM
Right
Green
WLAN/WWAN LED Indicator for half-size mini-PCIe slot