Is the Game Boy Advance slot on the DS region-locked?

Official Nintendo DS Lite GBA Slot Cover - gameboy slot I recently got into the mood for upgrading all my GBA games into Nintendo DS cases because they have that nice slot that fits them perfectly and casino online slot games If you have a DS Lite, you may have noticed that there's an insertcover for the GBA slot It's not just a plastic insert, but you can see

slot pg soft prodevreal com GB-BRK-M-XS Compact male breakout board for the Game Boy cartridge slot PCB size: ; PCB thickness: