Gateway E-1400 System Manual page 45

To reinstall the system board:
1
Align the rails located underneath the system board with the guides on
the chassis.
2
Push in the release lever until it is parallel with the chassis. This will
complete the reinstallation and lock the board in place.
3
Reconnect peripherals, the modem cord, and the power cord, then turn
on the system.
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System Components