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Will an M.2 SSD adapter in bottom PCIE slot on a B550 Aorus Pro AC work? (lemmy.world)

submitted 1 year ago by nakura@lemmy.world to c/techsupport@lemmy.world

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I have an B550 Aorus Pro AC motherboard with a Ryzen 5800X CPU. The first PCIE slot has my RTX 3080 GPU in it and both of the M.2 slots have drives in them. The second M.2 slot disables the second PCIE slot, it is either one or the other. That leaves the last PCIE slot, which according to the manual runs in x2 through the south bridge. I want to add another M.2 drive if I can, and my question is, if I get an adapter to put an M.2 drive in the last slot, will it work? I think not, since all the adapters I have seen say they need X4 at least, but I am not sure.

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[–] seaQueue@lemmy.world 5 points 1 year ago (1 children)

In theory most drives should support falling back to 2x mode now. In practice? Plug it in and try it out, it's hit and miss.

[–] nakura@lemmy.world 2 points 1 year ago

Thank you. I don't actually have the drive or the adapter yet, I should have specified that in my OP, my bad :( I don't really want to buy stuff and have it not work.

[–] olicvb@lemmy.ca 5 points 1 year ago (1 children)

Might be able to run it at 2x like the other commenter said.

I would go another route and run it through your usb, the manual says you have an USB 3.2 gen 2 which should be able to read up to 10 Gbit/s , more than enough for a pcie gen 4 m.2.

Get yourself an enclosure and plug it in there (make sure it also supports the speeds).

[–] nakura@lemmy.world 2 points 1 year ago (1 children)

I never thought of that, thank you. I might give that a try. I am not the biggest fan of external stuff though.

[–] seaQueue@lemmy.world 4 points 1 year ago* (last edited 1 year ago) (1 children)

If you go this route get a good enclosure with an rtl9210b chipset.

I bought like 5 of these, they're the only adapter I've found that's cheap, good, all metal (so the controller doesn't overheat), and has firmware without issues with TRIM on Linux: https://a.aliexpress.com/_mM2U8U6

This one benefits from adding a dab of thermal putty (or a pad) under the chipset so it can use the case as a heatsink. Same deal with the drive, a blob of putty on top to connect the drive to the lid helps performance.

[–] nakura@lemmy.world 1 points 1 year ago

Thank you :)