i do not know i do not know There is none, you gotta link it to the GBA to play certain games with other people, like Pokemon or Sonic Advance, fools!
i bought mine of eBay
around 25$
to the ACE HARDWARE..
Ebay and with the Fire Red and Leaf Green games.
you con go to eBay they don't cost a lot
A Gameboy link cable or wireless adapter.
To connect a wireless adapter to a Game Boy Advance SP, first ensure the adapter is compatible with your system. Insert the wireless adapter into the GBA SP's cartridge slot, making sure it fits securely. Once connected, power on the device; it should automatically recognize the adapter. Configure any necessary settings according to the specific game or application you are using with the adapter.
I don't know about the wireless adapter, but you can have a wire adapter and use it on you GBA (Game Boy Advance). YOU MUST HAVE A GBA TO ADAPT WITH THE WIRE, it doesn't fit on the DS. I don't know about the wireless but maybe someone else will later put the answer later on.
the wireless adapter
okay the wireless adapter isn't just for fire red for one and a wireless adapter is what you use to hook up 2 game boys together wirelessly.
no
it is a small accessory that attatches to the top of your game boy advance/game boy advance sp... it enables the interaction between the games emerald, fire red and leaf green... NOT!! rubt and sapphire