Connectors, ports and LEDs

Element	Label	Description
VCC Rev.3 Rev.4	VCC	Power connector
12-pole connector	–	4x digital Input, 4x digital output, 1x 1Wire, 1x 5V, 2x GND
SIM Card Slot	SIM1, SIM2	SIM card slots
HDMI port	HDMI	HDMI port (for debugging purposes only)
USB port	USB	USB port (for debugging purposes only)
Ethernet Port	ETH	Ethernet RJ45 socket
Antenna	ANT1, ANT2	Two antenna sockets, one per modem
Power LED	PWR	LED indicating power-on
User LED	USER	LED for user application purpose
SIM1,2 LEDs	Modem 1,2 (optional)	LED indicator for modem status
Ready LED	RDY	LED indication device status
Reset	RST	Switch for rebooting the device
User Switch	SW	Switch for restoring to factory settings