https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Sat, 18 Apr 2026 23:51:11 +0000 Sat, 18 Sep 2021 01:54:20 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=19578 https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ https://forum.asrock.com/forum_posts.asp?TID=19578&PID=90277&title=b450-pro4-m2-2-and-pcie4#90277 Author: NeoTrantor
Subject: 19578
Posted: 18 Sep 2021 at 1:54am

Hi,

today I put a PCIe card into PCIE4 but the card (LSI 8708EM2 RAID controller) was not recognized. Its BIOS doesn't show up and its also not listed in the lspci output.
I tested another card which also didn't work. Both tested cards work in another PC.
Now, the manual says, PCIE4 is being disabled if M2_1 is used but it isn't. I have a M2 SSD in M2_2 (the slot at the bottom of the board / next to the very last PCI slot just to make sure I didn't mix them up) but M2_1 is not used.

Any ideas what I could have done wrong?]]> Sat, 18 Sep 2021 01:54:20 +0000 https://forum.asrock.com/forum_posts.asp?TID=19578&PID=90277&title=b450-pro4-m2-2-and-pcie4#90277