Nintendo DS R4 card - Used to emulate a Nintendo DS game card. You can find these online or in some tech stores. MicroSD card - Storage for your ROMs. Try to find a microSD card with at least one gigabyte (1 GB) of RAM. MicroSD card adapter - A card that can plug into your computer’s SD card slot. A card adapter often comes with a microSD card. If your computer doesn’t have an SD card slot, you’ll need a microSD to USB adapter instead. ’ A ROM of the game you want to play - If you don’t already have the ROM, you can find one to download by typing “[game name] from Nintendo ds” into a search engine. Only download ROMs from safe websites.
The microSD should only fit one way. If it doesn’t fit, don’t force it—just rotate it and try again.
Modern Macs don’t have SD card slots, so you’ll need an SD card to USB-C adapter.
Windows - Open This PC, double-click your SD card’s name below the “Devices and drives” heading, and press Ctrl+V. Mac - Open Finder, click your SD card’s name in the lower-left side of the window, and press ⌘ Command+V.
Windows - Click the flash drive-shaped icon in the bottom-right corner of the screen (you may first have to click ^ there), click the Eject option, and then remove the card and adapter from your computer. Mac - Click the “Eject” icon to the right of the SD card’s name in Finder, then remove the card and adapter from your Mac when prompted.
If your DS opens to the SD card’s contents, skip this step.
