Question about downloads

Do GBA Roms work with the R4SD card or is it strictly NDS roms?

Slot 1 cards (the R4 is slot 1) are NDS only.

GBA cannot be played with a Slot 1 flashcart such as the R4, you need a Slot 2 device/flashcart to run them. Different hardware used.

*twitch*Read the [rules]. Use the Search function before posting. This question has been asked 14 times before.Note that this time, I omitted the word "please". There should be a specific rule regarding asking about "GBA on R4" with a ban penalty. As well as "MapleStory DS".*twitch*