Just installed. Seams perfect! Only using it because my on-board audio died.
JUST REMEMBER TO USE THE DISK TO INSTALL DRIVERS!
I spent half an hour looking for drivers online, then I remembered that it comes with a disk.
It's also really small so it shouldn't suffocate anything else installed in your PC such as GPU. I was worried I would suffocate my EVGA GTX 960 SSC ACX 2.0 but it only covers 1/2 a fan. So, no worries there.
Works fine. Only one issue this product is quite fragile so you would expect it to come in a protective box, it came in a jiffy bag and I was lucky as it came all the way from china which I did not realise when I bought it, it was still intact. Other than that good purchase.