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Internal Connectors - Asus H81M-PLUS User Manual

H81m-plus user's manual
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1.7.2

Internal connectors

1.
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.
H81M-PLUS ATX power connectors
2.
Digital audio connector (4-1 pin SPDIF_OUT)
This connector is for an additional Sony/Philips Digital Interface (S/PDIF) port. Connect
the S/PDIF Out module cable to this connector, then install the module to a slot
opening at the back of the system chassis.
H81M-PLUS Digital audio connector
The S/PDIF module is purchased separately.
1-14
ATX12V
PIN 1
H81M-PLUS
For a fully configured system, we recommend that you use a power supply unit
(PSU) that complies with ATX 12V Specification 2.3 (or later version) and provides a
minimum power of 350W.
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 or when you intend to install additional
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.
H81M-PLUS
SPDIF_OUT
EATXPWR
+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
Chapter 1: Product introduction

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