Asus P8B75-M P8B75-MLE ATX power connectors, 4.Serial port connector (10-1pin COM1), P8B75-MLE Serial port (COM1) connector

3.ATX power connectors (24-pin EATXPWR, 4-pin ATX12V)

These connectors are for 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.

ATX12V EATXPWR

DC+12V DC+12V

PIN 1

GNDGND

P8B75-M LE

+3 Volts		GND
+12	Volts	+5 Volts
+12	Volts	+5 Volts
+5V Standby		+5 Volts
Power OK		-5 Volts
	GND	GND
+5 Volts		GND
	GND	GND
+5 Volts		PSON#
	GND	GND
+3	Volts	-12 Volts
+3	Volts	+3 Volts

PIN 1

P8B75-M LE ATX power connectors

• For a fully configured system, we recommend that you use a power supply unit (PSU) that complies with ATX 12 V Specification 2.0 (or later version) and provides a minimum power of 350 W.

•DO NOT forget to connect the 4-pin ATX +12V power plug. Otherwise, the system will not boot up.

•We recommend that you use a PSU with higher power output when configuring a system with more power-consuming devices. The system may become unstable or may not boot up if the power is inadequate.

•If you are uncertain about the minimum power supply requirement for your system, refer to the Recommended Power Supply Wattage Calculator at http://support.asus. com/PowerSupplyCalculator/PSCalculator.aspx?SLanguage=en-us for details.

4.Serial port connector (10-1 pin COM1)

This connector is for a serial (COM) port. Connect the serial port module cable to this connector, then install the module to a slot opening at the back of the system chassis.

COM1

CTS

DSR

DTR

RXD

PIN 1

DCD TXD GND RTS RI

P8B75-M LE

P8B75-M LE Serial port (COM1) connector

The COM module is purchased separately.

ASUS P8B75-M LE Series 1-25