Hello everyone. Hi Fernando. Finally I can say that I have had success with the H81 M-E motherboard. Here are some pictures. Unfortunately, the adater only supports running PCI x4 and this standard can only run PCI 2.0 on the ASUS H81 M-E motherboard.

Hi there
sorry hate to ask a dumb question but I found a file folder on my desktop for this file G771JMAS.203 and wondering what it is for?
I googled it and it brought me to this forum. I do have an asus lap top :)
Thanks for the help

@justcheckinin possibly a bios file
check your board name and its support site for bios updates
as a side note,not relevant to this topic

Hey sorry for posting in wrong place. I had just found the post with the same number as I have on my desktop.

Many thanks for taking the time to reply I appreciate it. Have a great day.

@Fernando @jaaa1976
Hello everyone and sorry for the inconvenience.

I would have help to ask who can help me, I have a pc with a Sabertooth P67. I had an m.2 SSD available and bought a pcie adapter to use it on this motherboard.
I installed the bios modified by jaaa1976, I launch the installation of windows 10 from bootable usb but I cannot see the m.2 disk to start the installation.
can you tell me where am I wrong and which parameters on the bios should I check?

Thank you very much for helping
ZazzaZenigata

Zitat von Fernando im Beitrag #6531

---

@o_privet: Did you finally succeed? It would be fine to get a feedback from your side.

---

Sabertooth P67 support
latest bios version is 3602 (2012/11/22)

updated bios with nvme support used Jmicron 1.0.8.01 here

Updating management engine firmware also recommended,
Intel (Converged Security) Management Engine: Drivers, Firmware and Tools

As rule of thumb,keep your OS,apps,bios and drivers updated

@onuracengiz

thanks for your support but someting not work, I had update bios with yours link and all succesfully.
But I can't find the pcie m2 ssd.

Some setting of my bios is:
PCI Express X1_2 Slot Configuration = U3 Mode (alternative X1 Mode)
Marvell Storage controller = AHCI Mode
PCI ROM Priorty = EFI Compatible ROM (alternative Legacy ROM)
Option ROM Message ) Keep Current (alternative Force BIOS)

If you have any idea I try to apply.

Thanks for your time
Zazzazenigata

Thanks @Fernando. It is a great tutorial!!

@Fernando
I added NvmExpressDxe_Small but no success. Still the bios does not see NVMe SSD.

Hello everyone,
I'd like to thank Fernando and Lost_N_BIOS for a great tutorial. Thanks to these tips, I was able to mod the bios for the ASUS M5A99X motherboard! I used a WD Blue SN550 SSD and an SSD M.2 NVMe PCIEx X4 / X8 / X16 adapter.
A few words about the BIOS installation itself. First, I ran and checked the correct operation of the SSD in the adapter on the original BIOS (M5A99X-EVO-R20-ASUS-2501). The drive should be visible in Windows. I formatted it for checking. As the Asus motherboard supports max. PCI 2.0 x4, so the speed oscillated around: write - 1200MB / s, read 1600MB / s. Then I uploaded the modified BIOS. The only way is to upload the BIOS via USB Flashback port and using flash button on the motherboard. After flashing the BIOS, do not look for the disk in the BIOS, you will not find its presence anywhere. We select the UEFI boot option from PCIEx and run the Windows installer. After the first reboot, Windows should boot from the M.2 NVMe disk. After entering the device manager, the NVMe controller is visible.
Sorry for my English, I used a translator