The same driver also support OS X 10.7 to 10.11, making it a great solution for owners of Macs that can’t be updated or they prefer to keep on an older release, and have had a Wi-Fi failure. The drivers for macOS 10.12 Sierra only appeared in January, if you had previously discounted this as an option. Once, a variety of alternatives existed for the Mac, but there’s no simply not enough of a market for them, and Edimax continues to update driver and utility software, keeping it viable.
If you’ve gone through all those stages or you want a second Wi-Fi connection on your Mac-useful for firewalls, relaying a Wi-Fi network, and other purposes-the Edimax AC1200 Dual Band Wi-Fi USB Adapter (model EW-7822ULC $24.99 MSRP available on Amazon) seems to be not only a good solution, but the only solution. In August 2016, I wrote a column that provided all the advice we had to troubleshoot the problem, which is sometimes caused by system software, sometimes by failed hardware, and sometimes by a bad connection.
As the Mac 911 columnist at Macworld, I’ve received hundreds of emails from people who have had Wi-Fi fail on their computers.
