Pros: Easy to install. It came with a setup disk, but I didn't use for either a Windows 7 or a Windows 10 setup (the same PC - just both before and after Windows 10 installed). In both cases Windows reached out and installed a working driver to get the USB wireless adapter working.
Connectivity - this was installed to a PC, so no testing of multiple distances, etc., but transmitting through a single wall. Throughput was constant at around 520 Mbps, no problems there.
No utility to work with the adapter - I've seen these available with other adapters, but I've also seen them conflict with Windows and fight, as it were, over who's in control. I prefer not to have that battle.
Cons: Size of the adapter is problematic. If you put it in the front of the PC, you must be careful of inadvertently brushing it, knocking it out of the slot. If in the back of the PC, then it sticks out into the cables, wires, etc.
Connectivity - I encountered inconsistent issues on a second Windows 10 PC with initializing the device if removed / re-inserted. Took up to 5 minutes to start working again after re-connecting to the wireless network. Not your typical scenario, and no idea what the root cause is, and may not have been the adapter's fault, but something noticed along the way.
Overall, this was a decent addition to my children's PC that they use for online games. At the right price, I would recommend this to anyone looking for a simple addition of wireless.