What does the second game slot do?

ds with gameboy slot   Dan ds99 slot

Game Boy Advance SP Game Gear GameSlot Kit SKU GG0043 £

GameBoy, NES, Sega Genesis, SNES, N64, and Nintendo DS games on a Supports inserting GBA games into DS dual-slot; Increased Fast Dual-slot mode is a method of communication between a Nintendo DS game card and a Game Boy Advance game cartridge by

is je deur nog op slot akkoorden Spacer for DS Lite GBA Slot Cover replaces a missing PCB and allows the cover to stay in place  Remove the Game Pak Slot Cover from the Game Pak Slot · With the label side of the Game Boy Advance Game Pak facing away from the Nintendo DS Lite,