The easiest way to find an R4 SDHC card that will work with your DS is by typing r4 sdhc nintendo ds into an online store’s search.
You can find microSD cards online as well as in most tech stores. Most microSD cards come with an adapter that allows you to open the SD card on a computer. If your selected microSD card doesn’t include an adapter, you’ll need to buy one as well.
The microSD card only fits one way, so don’t force it. If the microSD card won’t fit into the adapter card, flip the microSD card over and try again.
If you use a Mac, you may need a USB-C to SD card adapter.
On Windows, select FAT32 as the file system. On Mac, select MS-DOS (FAT) as the file system.
Keep in mind that downloading ROMs for games that you don’t already own is piracy, which is illegal in most places. Make sure that you only download from sites that you can trust based on user feedback and reviews. You don’t want to accidentally download a virus.
For example, if your downloaded files normally go to the Downloads folder, you’d click Downloads here.
You may have to scroll down to find the SD card. Alternatively, you can click the This PC folder and then double-click your SD card’s name under the “Devices and drives” heading.
You may first have to click ^ in the lower-right corner of the screen to see the flash drive icon.
You may first have to click ^ in the lower-right corner of the screen to see the flash drive icon.
For most browsers, the default download location is the Downloads folder.
As with the microSD card’s adapter card, the microSD card only fits one way.
Make sure that the microSD card is snugly inserted into the R4 card as well. On the original DS, you may first have to plug a card reader into the bottom of the DS.