The Nintendo DS, DSi, and 3DS have all never had a USB port, and you could never connect any of them physically to a computer and use them as a device that your computer actually sees. There are ...

Kasumi, an unofficial GeForce NOW client for modded New Nintendo 3DS, New 3DS XL, and New 2DS XL systems, streams PC games using the handheld's video decoder. It supports streams up to 30 FPS at 960 × ...