Atx Power Connectors - Asus H81M-CT Manual

2. 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-CT ATX power connectors
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3. LPT connector (26-1 pin LPT)
The LPT (Line Printing Terminal) connector supports devices such as a printer. LPT
standardizes as IEEE 1284, which is the parallel port interface on IBM-compatible
computers.
H81M-CT Parallel Port connector
1-14
ATX12V
H81M-CT
For a fully configured system, we recommend that you use a power supply unit
(PSU) that complies with ATX 12V Specification 2.0 (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-CT
EATXPWR
+3 Volts GND
+12 Volts +5 Volts
+12 Volts +5 Volts
+5 Volts
+5V Standby
Power OK -5 Volts
GND GND
PIN 1
+5 Volts GND
GND GND
+5 Volts PSON#
GND GND
-12 Volts
+3 Volts
+3 Volts +3 Volts
PIN 1
LPT
PIN 1
Chapter 1: Product introduction