Has SNES (781), N64 (306), GB (630),GBC (707), GBA (17), PS1 (93), PS2 (68), and PSP (71), Sega Master System (885), Sega Genesis (1,008), Sega Game Gear (664) games. I have 1 with an external enclosure . The rest you would have to connect them internally.
And connect either your USB controller or one with a USB dongle to play wirelessly.
(5,241 games on drive)
This sale is for the Batocera drive and the games included in it are free.
Note: you can install inside the computer, use a external hard drive enclosure, or use a SATA to USB adapter.