If anyone could point me to the latest driver for download, it would be appreciated. The Alfa website lists only one Windows 7 driver, and it is six months old - messages to their tech support have gone unanswered. I've also seen the "rtwlanu.sys" cause a BSoD, which makes me suspect the drivers are buggy.įor starters, I'm having a hard time finding the most up-to-date drivers for the RTL8812AU chipset used by the AWUS036AC - strangely, there seems to be no listing for it on Realtek's website. What perplexes me is the variability of signal strength I'm seeing from hour-to-hour and day-to-day, and the fact that rebooting the computer almost always seems to improve the connection. I am connecting them to a TRENDnet TEW-812DRU AC1750 dual-band wireless router. The chipset uses smart switching to go into either mode depending on what type of network to which you are connected.I've purchased several Alfa AWUS036AC 802.11ac dual-band wifi USB adapters for use with three Windows 7 computers I have, and I am looking to get better performance out of them. When you connect to an 802.11n network, or a 1T1R 802.11ac network, the adapter will stay in USB 2.0 mode because the max speed of 480 for USB 2.0 is more than your network connection rate.īut connect to an 802.11ac network above 480, such as an 867 mbps 802.11ac 5 GHz network, and then check diagnostics again. When you are not connected to any network, this is the mode that will be displayed.
The default mode of these USB 3.0 devices according to diagnostics is USB 2.0. These devices are backward compatible with older networks that have speeds below 480 mbps, such as 802.11n 150 and 300 mbps networks. The reason this happens is because the driver switches between USB 2 and USB 3 modes as needed. So the adapter is not really 867 capable after all….hmmmmm.but wait, actually it is.
So you just received your brand new 802.11ac USB adapter, capable of 867 mbps, and you plug it in and run a diagnostic program and wait, what’s this? It says it is a USB 2.0 device? You run another diagnostic program and it says the same thing! You know that USB 2.0 is only capable of 480 mbps.
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