How to Play GAMEBOY ADVANCE GBA ROMs Games on 3DS2DS

Nintendo DS Lite Slot-2 Cover What Is It For? USG-005 nintendo ds lite gameboy slot The DS Lite that I converted into a Macro, has a wider support of sorts, with pins that stick out of it The other one, however, seems to have a nintendo switch game slot Spacer for DS Lite GBA Slot Cover replaces a missing PCB and allows the cover to stay in place

nintendo switch game card slot Nintendo ds lite I cannot find where to slot it in Any ideas Jan 3 my ds lite will read gameboy advanced games but it wont even read a ds