Asus P7F-E - Manual (Page 52)

2-34 Chapter 2: Hardware information
11. Power Supply SMBus connector (5-pin PSUSMB1)
This connector allows you to connect SMBus (System Management Bus) to
the power supply unit to read PSU information. Devices communicate with an
SMBus host and/or other SMBus devices using the SMBus interface.
12. ATX power connectors
(24-pin EATXPWR1, 8-pin EATX12V1)
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 24+8-pin power plugs; 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.
• This motherboard supports ATX2.0 PSU or later version.
• Ensure that your power supply unit (PSU) can provide at least the minimum
power required by your system.