The bios you’ll need is the one made for FinalBurn Alpha, if other neogeo.zip bios is used, for example the MAME version, AES mode won’t work and the games will load in MVS (arcade) mode.

NEO GEO AES is the home version of the arcades, in the console versions you can change difficulty, bind controls, change language, in some versus fighters you can switch to other characters between a fight and another, among other nice features, while the arcade version MVS, we can change somethings, but not as intuitively like in the console version.