https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Fri, 01 May 2026 00:10:52 +0000 Wed, 06 Sep 2023 07:11:23 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=25913 https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ https://forum.asrock.com/forum_posts.asp?TID=25913&PID=107376&title=pcie-storage-expansion-card-not-detected-in-bios#107376 Author: kerberos_20
Subject: 25913
Posted: 06 Sep 2023 at 7:11am

Hoenhyme wrote: I also built a NAS system using the b550m itx/ac motherboard, mainly because it was one of the few options for ITX available. NAS is a 5 bay but the motherboard only has 4 SATA ports so I added a PCIe expansion card with two extra SATA ports. Previous tried replacing the WIFI card with and M.2 A+E two port SATA card. When that didn't work I bought another thinking the first may be bad. When the second didn't work I bought a PCIe card with two SATA ports. Problem is the 5th drive isn't being recognized in BIOS. When I boot to Unraid the same, I see four of the five drives. Is it the motherboard that is the issue? I have replaced cards, cables and drives. I know all the parts are good.

external sata card does not interact with mainboard sata controller, thats why you cant see it in bios and bios wont detect your drives connected to such external sata card, because bios doe not have drivers (modules) for it

if sata card has ooprom (bios driver), then you can enable ooprom loading (in bios setup) so that bios driver gets loaded after mainboard finishes POSTing (befor OS loads), connected drives would be than shown there
if there is no ooprom or its not compatible with your bios/uefi mode, then OS wont see your drives until you install driver for that sata controller]]> Wed, 06 Sep 2023 07:11:23 +0000 https://forum.asrock.com/forum_posts.asp?TID=25913&PID=107376&title=pcie-storage-expansion-card-not-detected-in-bios#107376 https://forum.asrock.com/forum_posts.asp?TID=25913&PID=107375&title=pcie-storage-expansion-card-not-detected-in-bios#107375 Author: Hoenhyme
Subject: 25913
Posted: 06 Sep 2023 at 4:50am

I also built a NAS system using the b550m itx/ac motherboard, mainly because it was one of the few options for ITX available. NAS is a 5 bay but the motherboard only has 4 SATA ports so I added a PCIe expansion card with two extra SATA ports. Previous tried replacing the WIFI card with and M.2 A+E two port SATA card. When that didn't work I bought another thinking the first may be bad. When the second didn't work I bought a PCIe card with two SATA ports. Problem is the 5th drive isn't being recognized in BIOS. When I boot to Unraid the same, I see four of the five drives. Is it the motherboard that is the issue? I have replaced cards, cables and drives. I know all the parts are good.]]> Wed, 06 Sep 2023 04:50:50 +0000 https://forum.asrock.com/forum_posts.asp?TID=25913&PID=107375&title=pcie-storage-expansion-card-not-detected-in-bios#107375 https://forum.asrock.com/forum_posts.asp?TID=25913&PID=104916&title=pcie-storage-expansion-card-not-detected-in-bios#104916 Author: kerberos_20
Subject: 25913
Posted: 22 May 2023 at 8:31am

windows doesnt see it?

if you want bios to see it, then the only purpose for it would be to utilise built in raid or to boot from drive connected to that sata adapter
bios shouldnt see that card as it has its own bios ooprom which works only when CSM is turned on (legacy bios) and storage set to legacy and loading optional ooproms is enabled in bios setup

Edited by kerberos_20 - 22 May 2023 at 8:32am]]> Mon, 22 May 2023 08:31:52 +0000 https://forum.asrock.com/forum_posts.asp?TID=25913&PID=104916&title=pcie-storage-expansion-card-not-detected-in-bios#104916 https://forum.asrock.com/forum_posts.asp?TID=25913&PID=104907&title=pcie-storage-expansion-card-not-detected-in-bios#104907 Author: huntingloopers
Subject: 25913
Posted: 20 May 2023 at 6:35pm

Hi there,

I have a b550m itx/ac and I wanted to get some more SATA ports on it for more storage since its going into my NAS system. I got a StarTech 2-Port PCI Express to SATA Expansion Card which said plug and play yet when I plug it in, it doesn't seem to work. Confused, I tested with another PC I have and it does work. I'm running a 4600G as my CPU.

Is there a BIOS setting or something that I need to enable to get it to function? I've seen forums saying this but there were for different vendor boards.]]> Sat, 20 May 2023 18:35:15 +0000 https://forum.asrock.com/forum_posts.asp?TID=25913&PID=104907&title=pcie-storage-expansion-card-not-detected-in-bios#104907