Asus P4T533 P4T533 User Manual - Page 52

13. ATX Power Connectors (20-pin ATXPWR, 4-pin 12V EZ_PLUG, 4pin ATX12V) These connectors are intended for an ATX 12V power supply. The plugs from the power supply are designed to fit these connectors in only one orientation. Find the proper orientation and push down firmly until the connectors completely fit. In addition to the 20-pin ATXPWR connector, this motherboard requires that you connect the 4-pin ATX +12V power plug to provide sufficient power to the CPU. Make sure that your ATX 12V power supply can provide at least 8A on the +12V lead and at least 1A on the +5-volt standby lead (+5VSB). The minimum recommended wattage is 230W, or 300W for a fully configured system. The system may become unstable and may experience difficulty powering up if the power supply is inadequate. ATXPWR EZ_PLUG +3.3VDC -12.0VDC +3.3VDC +3.3VDC NC GND GND GND GND +12V PS_ON# +5.0VDC GND GND GND +5.0VDC GND -5.0VDC GND PWR_OK ATX12V P4T533 +5.0VDC +5VSB ® +5.0VDC +12.0VDC GND GND +12V DC +12V DC P4T533 ATX & Auxiliary Power Connectors 14. SMBus Connector (6-1 pin SMB) This connector supports SMBus (System Management Bus) devices. SMBus devices communicate by means of the SMBus with an SMBus host and/or other SMBus devices. SMBus is a multi-device bus that permits multiple chips to connect to the same bus and enable each one to act as a master by initiating data transfer. P4T533 ® P4T533 SMBus Connector SMB 1 FLOATING SMBCLK Ground SMBDATA +3V 38 Chapter 2: Hardware information