Asus P5CR-L User Guide - Page 52

9 . SSI power connectors (24-pin ATXPWR1, 4- p i n A T X1 2 V 1 ) These connectors are for SSI power supply plugs. The power supply plugs are designed to fit these connectors in only one orientation. Find the proper orientation and push down firmly until the connectors completely fit. • Use of an SSI 12 V Specification 2.0-compliant power supply unit (PSU) that provides a minimum power of 450 W is recommended for a fully-configured system. • Do not forget to connect the 4-pin ATX12V1 power plug; otherwise, the system will not boot up. • Use of a PSU with a higher power output is recommended when configuring a system with more power consuming devices. The system may become unstable or may not boot up if the power is inadequate. • You must install a PSU with a higher power rating if you intend to install additional devices. ATX12V1 GND +12V DC GND +12V DC ATXPWR1 24-pin Power Connector +3 Volts +3 Volts Ground +5 Volts Ground +5 Volts Ground Power OK +5V Standby +12 Volts +12 Volts +3 Volts ® P5CR-LS +3 Volts -12 Volts Ground PSON# Ground Ground Ground -5 Volts +5 Volts +5 Volts +5 Volts Ground 1 P5CR-L(S) ATX power connectors 2-32 Chapter 2: Hardware information