Asus A8N-SLI A8N-SLI English edition user's manual, version E1815b - Page 50

8 . ATX power connectors (24-pin EATXPWR1, 4-pin ATX12V1, 4-pin EZ_PLUG) These connectors are for an ATX 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. • Do not forget to connect the 4-pin ATX +12 V power plug; otherwise, the system will not boot. • When using two graphics cards, do not forget to connect the 4-pin ATX +12 V power plug to the EZ Plug™; otherwise, the system will be unstable. See page 6-6 for details. • Use of a power supply unit (PSU) with a higher power output is recommended when configuring a system with more powerconsuming devices. The system may become unstable or may not boot up if the power is inadequate. • Make sure that your PSU can provide at least the minimum power required by your system. See the table below for details. Power supply requirements Components/ Peripherals AMD® K8 939-pin CPU type PCIe™ x16 graphics cards DDR DIMMs HDD Optical drive (DVD/CD-RW) PCIe™ x 1 card PCI cards IEEE 1394 devices USB devices Required +12V current Required wattage Heavy Athlon 64 FX-55 6800 Ultra x2 4 4 2 1 3 1 6 > 25A >= 500W Loading Normal Athlon 64 3800+ 6800GT x2 2 2 2 0 2 0 4 > 20A >= 400W Light Athlon 64 3400+ 6600GT x2 2 2 1 0 1 0 3 > 17A >= 350W ATX12V +12V DC GND EATXPWR +12V DC GND A8N-SLI EZ_PLUG +5V ® EZ_DET GND +12V A8N-SLI ATX power connectors +3 Volts -12 Volts Ground PSON# Ground Ground Ground -5 Volts +5 Volts +5 Volts +5 Volts Ground +3 Volts +3 Volts Ground +5 Volts Ground +5 Volts Ground Power OK +5V Standby +12 Volts +12 Volts +3 Volts 2-24 Chapter 2: Hardware information