This is the R4i flash cart, can be used to load your DS roms but CANNOT play 3DS roms. What comes in the box: -R4i -Micro SD card reader -Lanyard Will work on DS, DS lite, DSi, DSi XL, 3DS, 3DS XL. Purchased from Modchipcentral http://www.modchipcentral.com/store/R4i-3DS-RTS-USA-CANADA.html Thanks for watching! Comment, Rate, and Subscribe!!