In my testing with a single 2x2 Wi-Fi 6 client at close range, performance didn’t change by a significant amount. The release notes for beta version 5.53.1 claimed that Wi-Fi 6 connectivity and stability under load was improved, so my first test was to compare them on the U6-Lite. Before we get into performance, here’s the full list of their spec differences. The end result of all these differences is that the U6-LR should support more clients at once, deliver faster speeds to devices with support for 3 or 4 spatial streams, and cover more area than the U6-Lite. Ubiquiti isn’t the only manufacturer to pull this trick, but it’s still disappointing to see. You won’t see that extra 2.4 GHz performance on either of these models. Wi-Fi 5 only applied to the 5 GHz band, so Wi-Fi 6 is the first improvement we have seen to 2.4 GHz performance in over a decade. In the 2.4 GHz band, both models top out at MCS 7/64-QAM from Wi-Fi 4. They both support Wi-Fi 6 on their 5 GHz radios, but their 2.4 GHz radios have not been upgraded to Wi-Fi 6. Neither of the Wi-Fi 6 models include a power adapter, so you’ll have to use them with a PoE switch or buy a PoE injector separately. During early access the U6-LR was changed significantly, and the general release U6-LR was originally called the U6-Pro. The U6-LR is more of a replacement for the AC-Pro than the AC-LR, due to it’s higher price and higher specs. The UniFi 6 Lite is the same size as the nanoHD, and can use the nanoHD covers and recessed mounting bracket. The U6-LR is physically larger - the same size as the AC-HD. The Long Range also has addressable RGB lights and is partially dust and splash resistant, meaning it can be used in a protected outdoor area, like under a porch roof. The Long Range model has higher-gain antennas and higher transmit power, a more powerful processor, double the RAM, double the spatial streams, and requires PoE+. The WiFi 6 Lite and the WiFi 6 Long-Range have a few key differences.
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