AMD Motherboards - Unknown PCI Device

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Unknown PCI Device

Printed From: ASRock.com
Category: Technical Support
Forum Name: AMD Motherboards
Forum Description: Question about ASRock AMD motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=13186
Printed Date: 04 Nov 2025 at 10:58am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: Unknown PCI Device

Posted By: johmut
Subject: Unknown PCI Device
Date Posted: 17 Dec 2019 at 3:15pm

Hi,
I have a X570 mini ITX TB3 Phantom Gaming motherboard and installed Windows 10 1909 after having updated the BIOS to 2.0. I have installed all ASrock drivers ans still have 4 unknown PCI devices in Device Manager ?
3 Unknown PCI devices and 1 unknown PCI device Encryption/Decryption.
The SBI_TOM header is not connected on my MB as I don't have a TPM.
What can I do to get rid of these unknown devices, other than disable ?
Thx & KR

Replies:

Posted By: Ray62
Date Posted: 17 Dec 2019 at 9:14pm

Get the newest chipset driver from AMD and install it.
This replaces the old driver from AllIn1(v19.10.16_19H1_WHQL).zip

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Asrock Fatal1ty X370 Professional Gaming Offline
Under test:
MSI X570_MEG_ACE | AMD Ryzen 9 3900X | Scythe Mugen5 | 2x16GB F4-3200C14D-32GTZ@3466 | ASUS GeForce GTX 1080 Ti FE

Posted By: johmut
Date Posted: 20 Dec 2019 at 3:55am

Thanks @Ray62
Device Manager is clean now.