Installs into your drive bay to give access to USB C and A 3.1 ports. Connects to a USB gen2 header on the motherboard and one SATA power. I had issues with it, could've been my own system. Wouldn't keep USB 3 drives connected, so for USB 3 I couldn't tranafer data at all. But it charged devices fone and my USB 2 thumb drives worked. Didnt realize it wasnt working for me until the return window from amazon had passed. Amazon link supplied for details, and price new.