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Z97-WS
1-33
Chapter 1
• For a fully congured system, we recommend that you use a power supply unit
(PSU) that complies with ATX 12 V Specication 2.0 (or later version) and provides a
minimum power of 350 W.
• DO NOT forget to connect the 4-pin/8-pin EATX12 V power plug. Otherwise, the
system will not boot.
• We recommend that you use a PSU with a higher power output when conguring a
system with more power-consuming devices. The system may become unstable or
may not boot up if the power is inadequate.
• If you want to use two or more high-end PCI Express x16 cards, use a PSU with
1000W power or above to ensure the system stability.
• 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.
11. ATX power connectors
(24-pin EATXPWR; 8-pin EATX12V1, 8-pin EATX12V, 8-pin EATX12V1,
6-pin EATX12V)
These connectors are for ATX power supply plugs. The power supply plugs are
designed to t these connectors in only one orientation. Find the proper orientation and
push down rmly until the connectors completely t.
Z97-WS
Z97-WS power connectors
EATXPWR
PIN 1
GND
+5 Volts
+5 Volts
+5 Volts
-5 Volts
GND
GND
GND
PSON#
GND
-12 Volts
+3 Volts
+3 Volts
+12 Volts
+12 Volts
+5V Standby
Power OK
GND
+5 Volts
GND
+5 Volts
GND
+3 Volts
+3 Volts
EATX12V
EATX12V
PIN 1
PIN 1
+12V DC
+12V DC
+12V DC
+12V DC
GND
GND
GND
GND
PIN 1
+12V DC
+12V DC
+12V DC
GND
GND
GND
EATX12V1
+12V DC
+12V DC
+12V DC
+12V DC
GND
GND
GND
GND
A
A B
D C
B
C
D