Asus M2N-LR User Manual - Page 45

8. ATX power connectors (24-pin ATXPWR1,4-pin ATX12V) 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. • 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. • Make sure that your power supply unit (PSU) can provide at least the minimum power required by your system. See the table below for details. M2N-LR/SATA ® ATXPWR1 ATX12V1 +12V DC GND +3 Volts +3 Volts Ground +5 Volts Ground +5 Volts Ground Power OK +5V Standby +12 Volts +12 Volts +3 Volts +12V DC GND +3 Volts -12 Volts Ground PSON# Ground Ground Ground -5 Volts +5 Volts +5 Volts +5 Volts Ground M2N-LR/SATA ATX Power Connector 9. Power Supply SMBus connector (5-pin PSUSMB1) This connector allows you to connect SMBus (System Management Bus) devices to the power supply unit. Devices communicate with an SMBus host and/or other SMBus devices using the SMBus interface. M2N-LR/SATA ® PSUSMB1 +3.3V Remote Sense GND NC PSU_I2CDATA PSU_I2CCLK M2N-LR/SATA Power Supply SMBus Connector 2-26 Chapter 2: Hardware information