USB 3.0 is also backward-compatible with USB 2.0, so you can plug a USB 2.0 peripheral into a USB 3.0 port and it will function properly. You can also plug a USB 3.0 peripheral into a USB 2.0 port and it will work just fine. ... If your computer doesn't have USB 3.0 ports and isn't too old, then you're probably in luck.