Asus P65UP8 User Manual - Page 29

III. INSTALLATION 11. ASUS System Monitoring Module Connector (20-1 pin SERVER_CON) This connector is for an optional ASUS System Monitoring Module for monitoring system temperature and fan RPM. R R Pin 1 Server Connector 12. Chassis Open Alarm Connector (4-1 pin CHASSIS) This connector is for an optional ASUS System Monitoring Module for monitoring chassis open/close status. A high level signal to the chassis signal lead will indicate to the system that the chassis has been opened. Chassis Connector Power (+3V/+5V) Chassis Signal Ground For the chassis open alarm feature to work, you must connect the optional ASUS Server Managment Module to these pins. The +5V power comes from the power supply, when the A/C is connected. With the A/C power disconnected, the +3V power comes from the onboard button cell battery. III. INSTALLATION (Connectors) ASUS P/I-P65UP8 User's Manual 29