Game Boy Advance SP + Wireless Adapter? No Built-In Support—Use IR Adapter Instead

The GBA SP cannot use a wireless adapter—it lacks:

• Internal Wi-Fi/Bluetooth radio.
• External port for a dongle (only link-cable port).

Multiplayer Options on GBA SP

• Link Cable (Official): 2–4 players, 1 m range, zero latency. Works with all link-compatible games.
• Game Boy Advance Wireless Adapter (AGB-005): Infrared (IR), **not** RF. Requires **line-of-sight**, ≤ 3 ft, same room. Supported by ~15 titles (Pokémon Emerald, FireRed/LeafGreen, Mario Golf). Plugs into link port—works on SP.

True Wireless Handhelds

• Nintendo DS / DS Lite / DSi: Native 802.11b (local) + Nintendo Wi-Fi Connection (internet, discontinued).
• 3DS / 2DS: 802.11n, StreetPass, SpotPass, local wireless.

If you want cable-free link battles, the IR adapter on SP is your only native option—just sit facing each other.