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Chapter 3: Motherboard Connections
General Purpose I/O Header
The JGP1 (General Purpose Input/Output) header is an 8-bit general purpose I/O expander
on a pin header via the SMBus. Refer to the table below for pin definitions.
M.2 Slot
M.2 is located at JMD1 on the motherboard. The M.2 slot is designed for internal mounting
devices. The A2SAP-H motherboard deploys a B-KEY for SATA/PCI-E SSD devices or USB/
PCI-E WWAN or GNSS card. The A2SAP-H deploys a 2280 screw hole location for a 2280
M.2 module. 2242 and 3042 M.2 modules are supported by an extender bracket to fit on the
2280 screw hole location.
GPIO Header
Pin Definition
Pin#
Definition
Pin#
Definition
1
P3V3SB
2
GND
3
GP_P3V3_GP0
4
GP_P3V3_GP4
5
GP_P3V3_GP1
6
GP_P3V3_GP5
7
GP_P3V3_GP2
8
GP_P3V3_GP6
9
GP_P3V3_GP3
10
GP_P3V3_GP7