Asus P2-99 P2-99 User Manual - Page 35
ASUS P2-99 User's Manual, ATX Power Supply Connector 20-pin ATXPWR, IMPORTANT, Chassis Intrusion
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III. HARDWARE SETUP 15. ATX Power Supply Connector (20-pin ATXPWR) This connector connects to an ATX power supply. The plug from the power supply will only insert in one orientation because of the different hole sizes. Find the proper orientation and push down firmly but gently making sure that the pins are aligned. +3.3 Volts -12.0 Volts Ground Power Supply On Ground Ground Ground -5.0 Volts +5.0 Volts +5.0 Volts +3.3 Volts +3.3 Volts Ground +5.0 Volts Ground +5.0 Volts Ground Power Good +5V Standby +12.0 Volts P2-99 P2-99 ATX Power Connector IMPORTANT: Make sure that your ATX power supply can supply at least 10mA on the 5-volt standby lead (5VSB). You may experience difficulty in powering on your system if your power supply cannot support the load. For Wake-OnLAN support, your ATX power supply must supply at least 720mA +5VSB. 16. Chassis Intrusion Alarm Lead (optional) (4-1 pin CHASIS) This requires an external detection mechanism such as a chassis intrusion monitor/sensor or microswitch. The sensor is triggered when a high level signal is sent to the Chassis Signal lead, which occurs when a panel switch or light detector is triggered. This function requires the optional ASUS CIDB chassis sensor module to be installed (See APPENDIX). NOTE: When the chassis is opened, connect/short the Chassis Signal pin to the +5VSB pin. When the chassis is closed, connect/short the Chassis Signal pin to the Ground pin. Ground Chassis Signal +5Volt (Power Supply Stand By) III. H/W SETUP Connectors P2-99 P2-99 Chassis Open Alarm Lead ASUS P2-99 User's Manual 35