Adding a 3rd card to H510 Pro
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=20027
Printed Date: 22 Jul 2025 at 11:42pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: Adding a 3rd card to H510 Pro
Posted By: TheBrow
Subject: Adding a 3rd card to H510 Pro
Date Posted: 29 Dec 2021 at 11:19pm
Hello,
I cannot get more than 2 cards working. I have 2 PSU installed using the onboard connections. Each card is connected to PSU via the cards own power connections.
Motherboard - ASRock H510 Pro
BIOS - 1.40
CPU - Intel i3-10100F
RAM - 8GB Corsair DDR4
PSU x 2 - CORSAIR RM750MX
OS - WINDOWS 10 PRO
WORKING CARD 1 - Radeon 3060ti LHR
WORKING CARD 2 - AMD Radeon RX 5700 XT
NOT WORKING CARD 1 - Radeon RX5700 MECH GP OC
NOT WORKING CARD 2 - Radeon RX5700 MECH GP OC
RX5700 cards are from mates rig and work in that
When I power on the first two slots show as GREEN on the POST screen and anything in slots 3-6 show as ORANGE (definitely not red)
Device manager doesn't show anything other than than the green POST cards
Thanks in advance
Bred
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Replies:
Posted By: ASRock_TSD
Date Posted: 30 Dec 2021 at 2:12pm
Hi TheBrow,
Thank you for your post.
Please make sure all the cable has been connected. (including Molex connector)
If the Molex connector didn't be connected, the GPU may not able to get enough power and be detected by the system.
Below link is our recommendation to connect the cable.
https://www.asrock.com/support/faq.asp?id=503" rel="nofollow - https://www.asrock.com/support/faq.asp?id=503
All the best
ASRock TSD
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