Asus PRIME X370-A Manual page 10

1.2.1 Layout contents
Connectors / Jumpers / Slots / LED
1. ATX power connectors (24-pin EATXPWR, 8-pin EATX12V)
CPU and chassis fan connectors (4-pin CPU_FAN, 4-pin CHA_FAN1/2)
2.
3. Fan RGB header (4-pin FAN_RGB_HEADER)
4. M.2 Socket 3
5. AMD AM4 CPU socket
6. DDR4 DIMM slots
7. AMD X370 SATA 6.0Gb/s ports (SATA6G_1~6)
8. System panel connector (20-5 pin PANEL)
9. USB 3.1 Gen 1 connector (20-1 pin USB3_12)
10. USB 2.0 connectors (10-1 pin USB3~6)
11. Serial port connector (10-1 pin COM)
12. Digital audio connector (4-1 pin SPDIF_OUT)
13. Front panel audio connector (10-1 pin AAFP)
14. Clear RTC RAM (2-pin CLRTC)
15. PCI Express 2.0 x1 slots
16. PCI slots
17. PCI Express x16 slots
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.
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2. CPU and chassis fan connectors (4-pin CPU_FAN, 4-pin CHA_FAN1/2)
Connect the fan cables to the fan connectors on the motherboard, ensuring that the
black wire of each cable matches the ground pin of the connector.
1-2
We recommend that you use an EATX 12V Specification
2.0-compliant power supply unit (PSU) with a minimum of 300W
power rating. This PSU type has 24-pin and 8-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.
EATX12V
PIN 1
EATXPWR
+3 Volts
+12 Volts
+12 Volts
+5V Standby
Power OK
GND
+5 Volts
GND
+5 Volts
GND
+3 Volts
+3 Volts
PIN 1
Chapter 1: Product introduction
Page
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1-5
1-5
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1-6
GND
+5 Volts
+5 Volts
+5 Volts
-5 Volts
GND
GND
GND
PSON#
GND
-12 Volts
+3 Volts