PCIE lanes and M2

[BuzzFuzz]

ROG STRIX X870E-E GAMING WIFI

Problem, I'm running 2x M.2 drive and of course GPU. I'm trying to use bottom PCIE and lane is kinda dead.

As I found out, it could be, because I'm using wrong M2 slot for my C and D drive. 

Can anyone check where the hell I need to put my M2 System drive and D drive to give stupid bottom PCIE lane power!

[nemen]

you want somebody else to check? read your manual

[BuzzFuzz]

I did; I just don't understand the meanings of x4, etc., or if there are any performance differences, and so on. 

[n0pslide]

Dafuq u need the lower slot for?! Getting too comfortable there boi.
Anyways, Ima assume u don't need x16 on the GPU and running 9000 series CPU.
M.2_1 is where ur Gen5 system drive goes.
M.2_4 or M.2_5 is where your secondary Gen4 drive goes. Yup, the 4th and 5th slots redline at Gen4. Want another Gen5 drive? - U forget about the lower pcie slot and pop the drive into M.2_3.
I knew what was going on right away so I outlined it. But in general I agree with the other dude - u gotta RTFM buddy.
P.S. Just in case stop by BIOS, type in "bifurcation" in search and make sure both items that'll pop out are set to auto.

[BuzzFuzz]

Thanks, I did read manuals but get lost with x16, x4 and not knowing if I lost any performance. Let me switch slots and test. Coming back to you. Cheers

[n0pslide]

Oh, shieeeet... But don't trip - ima help u out. Do me a favor and respond with the FULL hardware list of this build. Including whatever u trying to stick into that second pci-e slot. I'll throw together a basic what-goes-where and some bios settings to get u up and running. I don't got sh!t else to do and bored af on a sunday...

[BuzzFuzz]

AMD 9800X3D, RTX 4090, Asus  STRIX X870E-E  gaming wifi, Windows 11 24H2.

PCI-E slot: ZDMA Device

check DM 😉

[BuzzFuzz]

I changed it as you said; the device is still not showing up in the device manager. In BIOS, I have only one option under "bifurcation" and it's already on Auto Mode.