DFI GH9A3 User Manual page 11

Assembly
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1. Locate the COM Express board-to-board connector on the bottom side of the module
and the carrier board. Locate the mounting holes on the module and the corresponding
stand-offs on the carrier board.
User's Manual | GH9A3
Board-to-board connector on
COM Express module
Board-to-board connector on
carrier board
2. Place the module on the carrier board while making sure the mounting holes and con-
nectors all align. At the long edge of the module closer to the connector, apply firm
pressure onto the module and press it onto the carrier board until the two stand-offs
and the edge of the module close up. The other edge of the module away from the con-
nector may still remain slightly aloft from the stand-offs at this moment.
3. At the long edge away from the connector, apply firm pressure with another hand onto
the module and press it onto the carrier board until the module is against the remaining
two stand-offs. Please also maintain the pressure described in the previous step the
whole time.
Chapter 2
HARDWARE INSTALLATION
11