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Serial interface
Secondary Expansion Card Slot
The secondary expansion board has the following interfaces:
Power supply: V_PWR, 3V4, 3V3
24 MHz clock signal
Master reset signal
High speed USB interface
SDIO interface
GPIO signals
WWAN module
The WWAN module in the CloudGate LTE WW is the LN930 module. It supports LTE Cat 3.
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