Asus ROG Strix X470-I Gaming Manual page 26

2. 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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3. USB 2.0 connector (10-1 pin USB12)
This connector is for a USB 2.0 port. Connect the USB module cable to this connector,
then install the module to a slot opening at the back of the system chassis. This USB
connector complies with USB 2.0 specification that supports up to 480 Mb/s connection
speed.
Never connect a 1394 cable to the USB connectors. Doing so will damage the
motherboard!
1-12
For a fully configured system, we recommend that you use a power supply unit
(PSU) that complies with ATX 12 V Specification 2.0 (or later version) and provides a
minimum power of 350 W.
Do not forget to connect the 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 configuring a
system with more power-consuming devices. The system may become unstable or
may not boot up if the power is inadequate.
Chapter 1: Product Introduction