Does exactly what it says on the tin + is genuinely plug-and-play. No installation required on a Windows 10 desktop, despite the fact that it comes with one of those mini CDs I assumed had gone extinct in 2005. Lights up blue when in use, which is kinda cute. Connection is very stable so far, though I am only using it with one device.
One caution is that it is slightly bigger than it appears to be in the photo. Not huge, and it's definitely not in the way on a desktop, but for laptop use you'd probably have to unplug it before putting it in a laptop bag or anything. It sticks out about 11mm from the USB port.