Intel Motherboards - B85M Pro4 USB 2.0 ports error

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B85M Pro4 USB 2.0 ports error

Printed From: ASRock.com
Category: Technical Support
Forum Name: Intel Motherboards
Forum Description: Question about ASRock Intel Motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=14137
Printed Date: 04 Aug 2025 at 6:18am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: B85M Pro4 USB 2.0 ports error

Posted By: tamhoang2008
Subject: B85M Pro4 USB 2.0 ports error
Date Posted: 18 Apr 2020 at 1:34pm

B85M Pro4 after Internet Flash to ME FM version is 9.0.30.1482 repeatedly disconnected/connected USB 2.0 ports.
I can't connect any usb 2.0 or card reader in any usb 2.0 ports. These ports only accept mouse/keyboard.
There are 2 usb 3.0 ports which are ok to connect ssd or external HDD using usb 3.0 method.
Many solution methods in any forums is useless.
Can i flash older bios to this motherboard? This is the only way to fix this problems. But unfortunately it need to use usb drive 3.0 formatting FAT32 to be used in Instant Flash.
Can anyone fix this problems before?

Replies:

Posted By: tamhoang2008
Date Posted: 18 Apr 2020 at 2:29pm

Just flash back to older BiOS -> useless...