Asus AP2000 Hardware Reference - Page 28

II. System Components Motherboard Securing Remove the extended expansion card guide before installing or removing the motherboard. All screws are necessary to provide the needed stabilization to support all the motherboard expansion cards used in a server. Place four spacers in the areas circled on the chassis. II. Components Place nine screws in the areas circled on the motherboard. There is a chassis intrusion connector here. Installed P2B-DS motherboard Chassis Intrusion Switch The chassis provides an micro toggle switch that must be connected to the motherboard for the intrusion detection to work. The motherboard will signal the ASMA software when the side panel is opened. The connection diagram is given here. From chassis micro switch Motherboard's chassis intrusion connector Chassis Signal +5VSB 28 AP2000 Hardware Reference Guide