AMD Motherboards - ASRock A300 USB power

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ASRock A300 USB power

Printed From: ASRock.com
Category: Technical Support
Forum Name: AMD Motherboards
Forum Description: Question about ASRock AMD motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=11835
Printed Date: 28 Jul 2025 at 5:07pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: ASRock A300 USB power

Posted By: Faceliss
Subject: ASRock A300 USB power
Date Posted: 10 Jul 2019 at 3:50am

Hey guys I was just wondering if there's anyway to disable the power on the USB ports of the A300 when it's off (shutdown). I've been digging through the BIOS and I cant seem to find the option for it.

Why do I want to disable the power on the USB when the PC is off?

I use my A300 for my arcade1up cabinet and I installed some pretty bright LED buttons/switches which is connected to the PC through USB.

Replies:

Posted By: xhue
Date Posted: 10 Jul 2019 at 4:53am

Are you using latest BIOS?

You may also want to check options labeled ErP or EuP. Or maybe disable charging port?

Posted By: Faceliss
Date Posted: 11 Jul 2019 at 5:38am

Yes, I updated the BIOS as soon as I installed win10. Where could I find the options for ErP/EuP in the BIOS? Cause I've checked everything in the BIOS and I don't remember seeing those. All I saw was a USB power config option and that turns off the port completely. I also saw a thread here in the forums suggesting to enable Deep sleep (under the South Bridge) for s5 and s4 but that didn't solve my issue.