Review on 📶 High Speed USB WiFi Adapter – 1200M Dual Band 802.11ac 5dBi Wireless Dongle for PC/Desktop/Laptop, Compatible with Windows & Mac OS X by Dave Butler

So my iMac was having problems with poor Wi-Fi reception and completely lost Wi-Fi connectivity with the internal AirPort system. So I decided to try a USB WiFi antenna. I ordered these mainly because of the price. I wasn't expecting much but I was really surprised by the speed improvement. The first image shows the USB Wi-Fi adapter download speed at 85p Mbps. Second image showing iMac built-in Wi-Fi download at 57.4 Mbps. Big improvement! I used the Ookla SpeedTest app on a 27" iMac (Mid 2011) with 24GB or RAM and a 3.4GHz i7 processor. I used a short USB extension cable to raise the antenna above the iMac (third image).