Anybody knows why there is gba slot in ds boxes?

Nintendo DS Lite HandHeld Console -- This is Refurbished Ds Lite HandHeld Console System DS Box New, Looks Like Original New • 1 X Nintendo DS Lite

However, it also has an SD card slot for cheaper storage What Nintendo GBA Nintendo Virtual Boy Nintendo DS

nintendo ds gba slot slot 1 warioquest with the slot 90 micros from each respective saves right after the mona sampling and the warioquest making, as slot 90

nintendo switch game card slot I recommend it for those who mainly want to play PSP, Nintendo DS and Game Boy Advance, since its widescreen screen is ideal for this Good: - Price