I was hesitant to order this after looking at most of the reviews, there were very conflicting answers that they didn't fully work. It would be a real shame if you had 2 USB 3 ports only to know that only one works. I've had some desktop card readers with USB ports not working because I don't have enough ports on my motherboard and it seems frustrating. Connected, lay a screed. Works as it should be. Used on Asus ROG x570. Now I'm more worried about bad reviews and I think it's their motherboard, maybe it was installed wrong? With a good Amazon return policy, I say buy it, return it if it doesn't work. Thank you Goliton.