Model : T4U

Hardware Version :

Firmware Version :

ISP :

I purchased one new from Amazon.

I need some help figuring out what to do. I followed instructions and my PC sees the device - it's in my device manager. When I run the included software and select the adapter from that, the software mentions a "failure" and that the adapter cannot be selected. So the software pretty much does nothing at that point since everything is greyed-out. I've tried uninstalling and reinstalling the drivers. I've tried the driver from the TP-LINK support website instead, to no avail. I even tried an updated driver (not sure it's official) I found on this forum, which also installed properly, like the others, but didn't get the adapter to turn on and scan for networks. I've even installed without the support software, and again get pretty much nothing but a supposedly "functioning properly" device in my device manager that doesn't do anything.

So I've got hardware that my PC can see, multiple drivers tried out, but cannot get the device to activate. When I use Window's troubleshoot it says something vague like "there is a hardware problem with your adapter."

Any ideas how to diagnose this and get it to work, or could it be just be I need a replacement? (somehow I think it's more of a compatibility issue)

Thanks,
Andrew