M.2 is a specification for expansion cards and connectors that can provide multiple interfaces such as PCIe and USB.
The ConnectCore 95 Development Kit contains two M.2 connectors:
M.2 B-Key connector
The following interfaces are routed to the M.2 B-Key connector:
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PCIE2
-
USB1 (SMARC USB0). Disconnected by default through non-populated 0-ohm resistors to avoid conflict with M.2 E-Key.
This connector connects to a micro SIM connector to provide support for cellular modems.
M.2 E-Key connector
The following interfaces are routed to the M.2 E-Key connector:
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PCIE1
-
USB1 (SMARC USB0)
-
LPI2C4