Intel Motherboards - H81 PRO BTC - Do you need powered risers?

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H81 PRO BTC - Do you need powered risers?

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=6814
Printed Date: 01 Aug 2025 at 5:29am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: H81 PRO BTC - Do you need powered risers?

Posted By: biggy
Subject: H81 PRO BTC - Do you need powered risers?
Date Posted: 03 Dec 2017 at 11:20pm

" rel="nofollow - Hi There,

I got a question about the H81 Pro BTC rev 2 and usings risers.

My setup is as follows:

H81 pro btc rev 2 mainboard

6x gtx 1070 ti

6x POWERED usb risers

So basically my question is, what setup should I use:

A) usings powered USB risers and connect the 2 molex powercables to the mobo

B) use powered USB risers and NOT connect the 2 molex powercables to the mobo

C) us NON powered risers and use the 2 molex powercables on the mobo

There is nothing about this in the manual and on other forums the awnser is mixed. Few say NOT to used powered risers and use only the two molex on the motherboard. Others says you should use risers and both molex.

I did use powered risers and the two molex on the montherboard. But when installing more then 2 video cards widows freezes and gives me a black screen. With 1 videocard everything works fine.

Any advice on this?

Replies:

Posted By: sethy
Date Posted: 06 Dec 2017 at 3:20am

I'm having almost the exact same issue! 1 card works fine. Multiple cards, I get an error from Windows telling me it can't find enough resources for the 2nd card (error Code 12)

Posted By: biggy
Date Posted: 14 Dec 2017 at 11:05pm

The official response from Asrock is to use the 2 molex on the motherboard and powered risers. Can confirm this works ok.

If your cards cannot find enough resources in Windows you need to disable the Audio device in device manager. For each card a new audio device will be installed.