Accessories for the Sega Saturn cartridge slot?

The GGFM fits on top of the GameGear cartridge slot The FM audio is

The GGFM fits on top of the GameGear cartridge slot The FM audio is

sega saturn cartridge slot It works with Game Boy, Game Boy Color and Game Boy Advance games through its cartridge slot, while games from the Sega Game Gear, TurboGrafx-16

love island slot Saturn Homebrew Cartridges ; USB dev cart, USB port, @300KBs, No extra RAM ; Saturn Gamer's Cartridge #new#, SD card, @40KBs #new#