Can you possibly answer this question?

What's the card for downloading gba games called? After buying R4 for DS I want to know what should I buy to download GBA games ... A million thanks to those who help

There are several cards capable of playing GBA emulators.
SuperCard and M3 Lite to name a few.

ez 3-1 is cheaper than them all and has a rumble pack and expansion RAM....BUY IT

I've heard bad things about it's compatibility rate though.