https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Sat, 02 May 2026 20:01:39 +0000 Thu, 22 Jun 2023 20:24:12 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=25826 https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ https://forum.asrock.com/forum_posts.asp?TID=25826&PID=105298&title=z390-taichi-additional-m2s#105298 Author: threadzipper1957
Subject: 25826
Posted: 22 Jun 2023 at 8:24pm

When You are referring to PCIE cards, that can hold up to 4 M.2's. the PCIE slot must support bifurcation, so the 16 PCIE lanes, must be divided in 4x 4 lanes.
You should check this in your BIOS
Here is the layout of the PCIE slots
- 3 x PCI Express 3.0 x16 Slots (PCIE2/PCIE4/PCIE5: single at x16 (PCIE2); dual at x8 (PCIE2) / x8 (PCIE4); triple at x8 (PCIE2) / x4 (PCIE4) / x4 (PCIE5))*
Meaning PCIE2 has 16 lanes, but when also adding a card in PCIE4, both slots get 8 lanes each.
From the manual, I see that, there is no bifurcation, so I would say no]]> Thu, 22 Jun 2023 20:24:12 +0000 https://forum.asrock.com/forum_posts.asp?TID=25826&PID=105298&title=z390-taichi-additional-m2s#105298 https://forum.asrock.com/forum_posts.asp?TID=25826&PID=104671&title=z390-taichi-additional-m2s#104671 Author: LDH67
Subject: 25826
Posted: 28 Apr 2023 at 7:26am

Hi community,

My Z390 is still going strong. For some background, I do a little development with a number of flight simulators, so sometimes for me space can be at a premium, so I would like to ask this question please:

At the moment, all 3 of the M2 slots on my motherboard are occupied, and working well. I was considering adding a PCIe card that holds additional M2 drives. I know that this (potentially) can slow down drive access, but I'm not sure if the card adds additional data lanes?

Can anybody advise as to whether or not this would work please?

Many thanks,

Andrew.]]> Fri, 28 Apr 2023 07:26:40 +0000 https://forum.asrock.com/forum_posts.asp?TID=25826&PID=104671&title=z390-taichi-additional-m2s#104671