As per Fernando’s awesome guide, i have successfully modded Asus H81M-A 2203 BIOS for NVMe support.
It works succesfully with Sabrent Rocket NVMe 256GB (SB-ROCKET-256) and Windows 10.
I used the nvmexpressdxe_4.ffs module from the thread.
No modules were removed to make room, it fit without issues.
The flash file cannot be flashed from the BIOS or using ASUS’s tools because of the security protection. Need to use AFUDOS or AFUWIN version 3.05.04 (with the /GAN parameter). It can only be flashed using the /GAN parameter.
H81M-A-2203-NVMe.zip (5.08 MB)