3. HARDWARE SETUP 18) Chassis Intrusion Lead (4-1 pin CHASSIS) This lead is for a chassis designed for chassis intrusion detection. After-market toggle switches may also be installed to the chassis panel or on any removable components. Two wires should be available from the chassis to connect to this lead. When any chassis component is removed, the contact should open and the motherboard will record a chassis intrusion event. The event can then be pro- cessed by software, such as LDCM. If the chassis intrusion lead is not used, a jumper cap must be placed over the pins to prevent unnecessary power loss. Ground Chassis Signal 1 +5Volt (Power Supply Stand By) Connectors 3.
H/W SETUP CHASSIS K7M-RM Chassis Open Alarm Lead ® 19) ATX Power Supply Connector (20-pin block ATXPWR) This connector connects to an ATX power supply. The plug from the power sup- ply will only insert in one orientation because of the different hole sizes. Find the proper orientation and push down firmly making sure that the pins are aligned. IMPORTANT: Make sure that your ATX power supply (minimum recommended wattage: 200 watts; 235W for a fully-configured system) can supply at least 20 amperes on the +5-volt lead and 10mA on the +5-volt standby lead (+5VSB). Your system may become unstable/unreliable and may experience difficulty in powering up if your power supply is inadequate.
For Wake-On-LAN support, your ATX power supply must supply at least 720mA +5VSB. +5V Standby +12.0Volts +3.3Volts -12.0Volts Ground Power Supply On Ground Ground Ground -5.0 Volts +5.0 Volts +5.0 Volts Power Good +3.3 Volts +3.3 Volts Ground +5.0 Volts Ground +5.0 Volts Ground ATXPWR K7M-RM ATX Power Connector ® 42 ASUS K7M-RM User’s Manual MR-M7K 0 1 0 1 0 1 MR-M7K 0 1 0 1 0 1