5Remove the system board by sliding the board toward the front of the case. The system board standoffs slide out of the keyhole slots.
Keyhole slot
Standoff
6Slide the new system board into the keyhole slots and lock it into place with the thumbscrew.
Important The new system board must have special standoffs (pem studs) mounted on the bottom of the board. If necessary, use the standoffs from the original system board.
7Connect the power and data cables.
8Install the expansion cards by following the procedure in “To replace, add, or reseat an expansion card:” on page 30.
9Close the case by following the procedure “To close the Gateway
36Working with the Gateway