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LPX

M.2 Adapter Card (PCIe x4) into Asus Maximus VIII Hero

With the nvme in the bottom slot it should all work and with the GPU at x16, in the slot below the GPU it would flip the GPU to x8 but should work too.

If not there are probably some BIOS shenanigans.

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Posted · Original PosterOP

I have a quick question. I am trying to install an M.2 adapter Card into my Asus Maximus VIII Hero motherboard. But for some reason my PC won't post anymore after I install the card (keeps rebooting without post code). When I remove it everything is fine again. As far as I know PCIe is downward compatible in terms of x4 x8 etc so it should not matter if I put the card into an x8 slot right?

 

Do I need to reconfigure lanes in the BIOS first or tell it that this is a storage device? Sorry if that is a stupid question, but never did this before.

All I have installed right now is a GeForce GTX1080 in my x16 slot.

 

Thankful for any advice.

 

Here are some images:

Adapter Card:

https://imgur.com/Ilg0mL7

Tried to install here:

https://imgur.com/aY67Knd

Configuration:

https://imgur.com/Q821UrD

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You've simply run out of pcie lanes. You already have a m.2 drive in there so basically you are capped out. Also why the need for more m.2 storage? Do you really need the speeds? If this is just for gaming and regular use you just simply will not notice any difference what so ever between a sata ssd or m.2 drive.

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Posted · Original PosterOP

Thx for your fast reply. I planned to use it for my transcodes and encoding storage for my videos as I am running out of space on my internal M.2

So you say there is now way I will get this up and running with the configuration I have right now?

 

EDIT: also the metadata for my plex server is on the internal M.2 drive.

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I disagree with jaslion. Having one M.2 NVMe drive and a single GPU (and nothing else as you stated) installed is certainly not going to render all your remaining PCIe slots unusable. The most thing that could happen is that your GPU is downgraded to PCIe 3.0 x8 instead of x16.

Have you checked that the M.2 drive you are trying to install is actually a NVMe drive and not a SATA drive using the M.2 interface?

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Posted · Best Answer

With the nvme in the bottom slot it should all work and with the GPU at x16, in the slot below the GPU it would flip the GPU to x8 but should work too.

If not there are probably some BIOS shenanigans.


F@H
Desktop: i7-5960X 4.4GHz, Noctua NH-D14, ASUS Rampage V, 32GB, RTX2080S, 2TB NVMe SSD, 2x16TB HDD RAID0, Corsair HX1200, Thermaltake Overseer RX1, Samsung 4K curved 49" TV, 23" secondary

Mobile SFF rig: i9-9900K, Noctua NH-L9i, Asrock Z390 Phantom ITX-AC, 32GB, GTX1070, 2x1TB NVMe SSD RAID0, 2x5TB 2.5" HDD RAID0, Athena 500W Flex (Noctua fan), Custom 4.7l 3D printed case

 

Dell XPS 2 in 1 2019, 32GB, 1TB, 4K

 

GPD Win 2

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Posted · Original PosterOP

So you think it should actually work like "plug and play" with the bottom slot?

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Manual says that a card in the bottom slot should automatically disable the x1 slots, but maybe you have to go in the BIOS and change something e.g. if it's set to force the x1s to be enabled.

 

If there isn't maybe the BIOS is just buggy, see if there's an update.


F@H
Desktop: i7-5960X 4.4GHz, Noctua NH-D14, ASUS Rampage V, 32GB, RTX2080S, 2TB NVMe SSD, 2x16TB HDD RAID0, Corsair HX1200, Thermaltake Overseer RX1, Samsung 4K curved 49" TV, 23" secondary

Mobile SFF rig: i9-9900K, Noctua NH-L9i, Asrock Z390 Phantom ITX-AC, 32GB, GTX1070, 2x1TB NVMe SSD RAID0, 2x5TB 2.5" HDD RAID0, Athena 500W Flex (Noctua fan), Custom 4.7l 3D printed case

 

Dell XPS 2 in 1 2019, 32GB, 1TB, 4K

 

GPD Win 2

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Posted · Original PosterOP

Ok will check that. thx alot. As I said, BIOS is up to date.

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Posted · Original PosterOP

I have found an option the BIOS that says:

 

PCIEX4_3 Slot(black) Bandwith which I can set to "Auto" or "X2 Mode" and "X4 Mode". Right now it it set to "Auto".

 

The description says:

 

[Auto]: If inser a X4 card onto PCIeX4_3, switch to X4 mode. If not, switch to X2 mode.

[X2 Mode]: X2 for PCIeX4_3; X1 for PCIeX1_2 and PCIeX1_3

[X4 Mode]: X4 for PCIEeX4_3

 

With PCIeX4_3 does it mean the "third" PCIe slot?

 

IMG_20200815_144319.jpg

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1 minute ago, LPX said:

With PCIeX4_3 does it mean the "third" PCIe slot?

Look at the mobo manual to see what refers to what (sometimes also printed on the mobo itself).


F@H
Desktop: i7-5960X 4.4GHz, Noctua NH-D14, ASUS Rampage V, 32GB, RTX2080S, 2TB NVMe SSD, 2x16TB HDD RAID0, Corsair HX1200, Thermaltake Overseer RX1, Samsung 4K curved 49" TV, 23" secondary

Mobile SFF rig: i9-9900K, Noctua NH-L9i, Asrock Z390 Phantom ITX-AC, 32GB, GTX1070, 2x1TB NVMe SSD RAID0, 2x5TB 2.5" HDD RAID0, Athena 500W Flex (Noctua fan), Custom 4.7l 3D printed case

 

Dell XPS 2 in 1 2019, 32GB, 1TB, 4K

 

GPD Win 2

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Posted · Original PosterOP

yes it is the slot on the very bottom according to the manual. I'll set it to X4 and see what happens. Hopefully it will work. Fingers crossed.

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Posted · Original PosterOP

that did the trick! It is working now! thank you so much for your help guys, seriously. You made my day :D 

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Posted · Original PosterOP

Now that I think of it, I should have probably just waited for a few reboots. As it was set to "Auto" I guess it cant change the PCIe speed on the fly and needs to reboot a few times to get the correct speed.

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Auto is supposed to detect whether a card is in the other slots and choose automatically, but that stuff doesn't always work right. Rebooting likely wouldn't have changed anything.


F@H
Desktop: i7-5960X 4.4GHz, Noctua NH-D14, ASUS Rampage V, 32GB, RTX2080S, 2TB NVMe SSD, 2x16TB HDD RAID0, Corsair HX1200, Thermaltake Overseer RX1, Samsung 4K curved 49" TV, 23" secondary

Mobile SFF rig: i9-9900K, Noctua NH-L9i, Asrock Z390 Phantom ITX-AC, 32GB, GTX1070, 2x1TB NVMe SSD RAID0, 2x5TB 2.5" HDD RAID0, Athena 500W Flex (Noctua fan), Custom 4.7l 3D printed case

 

Dell XPS 2 in 1 2019, 32GB, 1TB, 4K

 

GPD Win 2

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