At first I was worried it wouldn't do what I wanted. To my pleasant surprise, it worked even better than I expected. I used the mini DVD that came with it to install the driver. It went smoothly. After installing the adapter, I boot my 27" iMac from Late 2009 (Mac OS 10.12. I quickly figured it must be because I installed it in a hub instead of the iMac itself. I have the USB Removed device from back of iMac and it's been working ever since Download speeds are even 15-30Mbps faster than the built-in Wi-Fi in iMac consistently exceeded 100Mbps while iMac consistently at 75-80Mbps /s was running. The reason I bought this adapter was because my iMac Wi-Fi would drop out every 2 or 3 days and I had to restart it to get it back to its original state. Life. I have every Tried fix I found online and it didn't work so I bought this adapter I don't give many 5 star reviews but this one deserved it - easy install and reliable performance better than I hoped for!
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