I used Dell because when that mod was done there was No Asus SLIC 2.1 available. It really makes No difference though as long as you have the correct certificate and you do, it included with the mod. If you flash the 0904 BIOS you will lose the SLIC 2.1 unless it already contains SLIC 2.1 (which I don't believe it does). The newer version would also have to be modified.