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How to force M2_2 PCI support with b450 pro4

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Outpost6 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Outpost6 Quote  Post ReplyReply Direct Link To This Post Topic: How to force M2_2 PCI support with b450 pro4
    Posted: 27 Jul 2024 at 7:10am
Thanks for that. I was tearing my hair out trying to get my WD_Black SN850X working and almost gave up when I saw it explicitly "not supported due to pin changes" but it works great in the M2_2 slot on 10.08!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote offmyrocker123 Quote  Post ReplyReply Direct Link To This Post Posted: 03 Jun 2024 at 1:30am
For those stopping in here for a solution.

Bios version 10.08 for the ASRock B450 Pro4 (full atx) worked. for me.

I was on version 4.20 with no luck moving my m.2 nvme pci 3x4 drive from M2_1 to M2_2. I wanted to free up m2_1 so I can try to use PCIE4.

After updating the bios I enabled the "Force m2_2" feature under storage options and all is well.

There is a warning not to use this bios with Summit Ridge (Ryzen 1800x for me) but it was worth a shot because otherwise I was going to go buy a new mobo and it worked fine so far.

Now I just need to figure out why PCIE4 is still not detecting https://forum.asrock.com/smileys/smiley11.gif
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Post Options Post Options   Thanks (0) Thanks(0)   Quote skardanaario Quote  Post ReplyReply Direct Link To This Post Posted: 12 Feb 2024 at 11:01pm
Hello,

I have this same issue with B550M Pro4! When I attach a Kingston NV2 2TB NVME drive to M2_2 the board does not POST and boot just hangs. I have no SATA etc. devices attached, only another NVME on M2_1. The board boots just fine if I remove the secondary NVME from M2_2.

Could you please provide me a link for a beta BIOS for B550M Pro4 with Force M2_2?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ribasmudj Quote  Post ReplyReply Direct Link To This Post Posted: 17 Jan 2024 at 9:45am
I just stumbled on this thread since I'm having the same issue with the B650M-HDV/M.2 board, the second "Hyper" M2_2 slot isn't working on my gen4 Lexar NM790 drive, it's just not recognized ever in BIOS or Windows.

It does work on my older SN550 drive but it is dropping out on every sleep or cold boot, only restarting the PC makes it reappear.

Are there any beta BIOS versions for this board that may resolve this?
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Post Options Post Options   Thanks (1) Thanks(1)   Quote kerberos_20 Quote  Post ReplyReply Direct Link To This Post Posted: 12 Jan 2024 at 6:00am
Originally posted by vikifah vikifah wrote:

please give me for B450M steel legend.
i cant use slot M.2_2 with my nvme.

https://www.asrock.com/mb/amd/b450m%20steel%20legend/#Specification

- 1 x M.2 Socket (M2_2), supports M Key type 2230/2242/2260/2280 M.2 SATA3 6.0 Gb/s module

as you can see, m2_2 supports just SATA drive, m2_1 supports both nvme and sata
if you plan to use multiple nvme drives, you would need to use pci-e to m2 adapter
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Post Options Post Options   Thanks (0) Thanks(0)   Quote bownser Quote  Post ReplyReply Direct Link To This Post Posted: 12 Jan 2024 at 12:01am
Originally posted by ASRock_TSD ASRock_TSD wrote:

Dear Customer,
Thank you for the posting.

For this case, please kindly download the BIOS 10.03A from the link below and update the BIOS to see if the M.2 SSD installed in the M2_2 slot can be recognized.
https://download.asrock.com/TSD/Desktop/Temp/B45P4_10.zip

Thank you

Yours truly,
ASRock TSD
i meant this bios
I have a 2700X installed as cpu
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Post Options Post Options   Thanks (0) Thanks(0)   Quote bownser Quote  Post ReplyReply Direct Link To This Post Posted: 11 Jan 2024 at 11:59pm
Hello
Can you confirm that I can use this BIOS with my B450 Pro4 (not B450M)
I'm having the same issue, board does not POST after installing m.2 nvme om m2_2, and there are no storage devices connecteD to SATA 3_3 and 3_4
Post stays on error A0 which indicates a SATA issue
NVME is Crucial MP600 Core XT PCIe 4.0 2TB of you can check compatibility
I found it weird that mobo did not post even with that installed on M2_1 alone with no other storage devices
Thanks in advance
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Post Options Post Options   Thanks (0) Thanks(0)   Quote vikifah Quote  Post ReplyReply Direct Link To This Post Posted: 05 Jan 2024 at 6:09pm
please give me for B450M steel legend.
i cant use slot M.2_2 with my nvme.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote j0m3r Quote  Post ReplyReply Direct Link To This Post Posted: 03 Jan 2024 at 6:41pm
It's say ASRock Ultra M.2 (PCIe Gen3 x4)
what the hell are you on about?
I asked for BIOS
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ASRock_TSD Quote  Post ReplyReply Direct Link To This Post Posted: 03 Jan 2024 at 6:05pm
Dear Customer,
Thank you for the posting.

For this case, we are sorry to inform you that M2_2 slot only supports SATA3 6.0 Gb/s module.

Please kindly refer to the specification of Storage.
https://www.asrock.com/MB/AMD/B450M%20Pro4%20R2.0/index.asp#Specification

Thank you

Yours truly,
ASRock TSD
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