3. Loosen two screws and remove the Main-Cover.Two screwsHooksMain-CoverFigure 2-63 Removing the Main-Cover4. Insert two Nylon-spacers into the specified holes, and fasten two Metal-spacers into the specifiedholes. (Both Nylon and Metal spacers are provided with 080E/008E/000E/1PRIU)If no more Expansion Interface cards are to be mounted on the 1st PCB, fasten two screws tosecure the 1st PCB on the top of the 080E/008E/000E/1PRIU.Expansion Interface Card(1st PCB)J21J1Nylon-SpacersMetal-SpacersScrew position1st EXP.PCBBoth sides arethe same.ScrewsFigure 2-64 Mounting the 1st Expansion Interface CardSL1100 ISSUE 5.02-44 Installation