Things You'll Need
Instructions
Place the micro SD (TF) card into the USB card reader. Look at the instructions to see how to place it in the slot.
Insert the USB card reader into your computer's USB port. Open the folder that pops up.
Open the folder on your computer that contains your downloaded games. These should be in .ROM or .NDS format.
Drag the .ROM or .NDS files into the TF card folder.
Remove the card reader safely.
Insert the TF card back into the R4 card.