Asus P8H77-M PRO P8H77-MPRO EATX power connectors, P8H77-MPRO Serial port (COM1) connector, 10.Serial port connectors (10-1pin COM1), EATX12V, EATXPWR

10.Serial port connectors (10-1 pin COM1)

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

The serial port bracket (COM1) is purchased separately.

COM1

	RXD DTR DSR CTS
PIN 1	DCD TXD GND RTS RI

P8H77-M PRO

P8H77-M PRO Serial port (COM1) connector11.ATX power connectors (24-pin EATXPWR; 8-pin EATX12V)

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.

	EATX12V		EATXPWR
	DC DC DC DC	+3 Volts		GND
	+12V +12V +12V +12V
		+12	Volts	+5 Volts
		+12	Volts	+5 Volts
		+5V Standby		+5 Volts
		Power OK		-5 Volts
	PIN 1		GND	GND
		+5 Volts		GND
	GND GND GND GND
P8H77-M PRO			GND	GND
		+5 Volts		PSON#
			GND	GND
		+3	Volts	-12 Volts
		+3	Volts	+3 Volts

Chapter 2

P8H77-M PRO EATX power connectors

PIN 1

•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 / 8-pin ATX +12V power plug. Otherwise, the system will not boot up.

ASUS P8H77-M PRO 2-27