Internal Connectors - Asus B85M-E R2.0 User Manual

1.7.2

Internal connectors

1. 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.
B85M-E R2.0
B85M-E R2.0 ATX power connectors
• We recommend that you use an ATX 12V Specification 2.0-compliant power supply
unit (PSU) with a minimum of 300W power rating. This PSU type has 24-pin and 4-pin
power plugs.
• DO NOT forget to connect the 4-pin/8-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.
2. 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 PC-compatible
computers.
B85M-E R2.0
B85M-E R2.0 Parallel port connector
ASUS B85M-E R2.0
A
EATX12V
A
+3 Volts
+12 Volts
+12 Volts
B +5V Standby
Power OK
PIN 1
+5 Volts
+5 Volts
+3 Volts
+3 Volts
LPT
B
EATXPWR
GND
+5 Volts
+5 Volts
+5 Volts
-5 Volts
GND GND
GND
GND GND
PSON#
GND GND
-12 Volts
+3 Volts
PIN 1
PIN 1
1-15