Asus ROG Strix B550-A Gaming AM4 ATX Motherboard - Manual (Page 22)

1-10 Chapter 1: Product Introduction
Chapter 1
5. Power connectors
These Power connectors allow you to connect your motherboard to a power supply.
The power supply plugs are designed to fit in only one orientation. Find the proper
orientation and push down firmly until the power supply plugs are fully inserted.
A
A
C
B
B
EATX12V_1 EATX12V_2
+12V DC +12V DC +12V DC +12V DC
GND GND GND GND
EATXPWR
PIN 1
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
PIN 1
+DC_IN +DC_IN
GND GND
C
• DO NOT connect the 4-pin power plug only. The motherboard may overheat under
heavy usage.
• Ensure to connect the 8-pin power plug, or connect both the 8-pin and 4-pin power
plugs.
• 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.
• We recommend that you use a PSU with a higher power output when configuring 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.