Intel Motherboards - H81 Pro BTC 2.0 : How to get 6 GPU

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H81 Pro BTC 2.0 : How to get 6 GPU

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=17704
Printed Date: 30 Jul 2025 at 2:47pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: H81 Pro BTC 2.0 : How to get 6 GPU

Posted By: mikebzh44
Subject: H81 Pro BTC 2.0 : How to get 6 GPU
Date Posted: 03 Jan 2021 at 8:56pm

Hello.

I just bought a second hand H81 Pro BTC 2.0 mother board and I plug 5 AMD Vega 56 on it.

I'm using a CoolerMaster V1200 Platinum PSU.

Each graphic card is powered byt its own 2x8pins PCI-Express cable and is plugged to a PCI-Express 1x to 16x USB riser

Motherboard MOLEX dedicated to PCI-Express are also plugged (I use 1 cable from the PSU)

When I use PCI-Express port #1 to #5 on the mother board, only GPU #2 to #5 are recognized by the OS (mmpOS based on Ubuntu).

I have to plug GPU on PCI-Express port #2 TO #6 to see all my GPU and to mine with it.

But I want to add an extra GPU so how can I make it possible ?

Thanks.