Intel Motherboards - PCIe x1 card in PCIs x16 slot does not work

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PCIe x1 card in PCIs x16 slot does not work

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=12908
Printed Date: 07 Nov 2025 at 7:31pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: PCIe x1 card in PCIs x16 slot does not work

Posted By: amalyshev
Subject: PCIe x1 card in PCIs x16 slot does not work
Date Posted: 18 Nov 2019 at 7:04am

I use Z370 Taichi motherboard in a server. I have a WiFi card QWA-AC2600, which has short PCIe x1 interface. It works fine in PCIE1 slot, which is x1 slot. But it is very close to a video card installed in slot PCIE2, which blocks heatsink, so I decided to install it in slot PCI5, which is available, but it is a long, x16 slot. From what I know the card should work just fine there, but it is not recognized by Windows and Ubuntu Linux. Could you clarify - why is that? Can I make it work in the long PICe slot?

Replies:

Posted By: amalyshev
Date Posted: 19 Nov 2019 at 6:03am

Any comments on this? Everywhere I read say that x1 devices should work fine in x16 slot, but in this motherboard it does not. What can be the problem?