iAmotus Bluetooth CSR 4.0 USB Adapter Dongle MINI Plug and Play with Window XP/Vista/Windows 7/8/10 (32-Bit + 64-Bit)

Its spec suggested it should work well with my Bluetooth Logitech keyboard and my mini-PC running Windows 10, 64 bit. And so it does, for maybe 48 hours. Then a "driver error" means the keyboard stops working and that's that. I have to force a shutdown and restart after a couple of minutes and, with a bit of luck, all is well again for a little while, Everything says the driver is OK, in any case I can't uninstall and reinstall it. The CD sent with the dongle doesn't allow just the device driver to be replaced but wants to change my other working drivers too. There's nothing online that has helped either - I've tried it all. I'm not going to shell out more money to buy software that claims to be able to sort it, either.It may be my PC, or the keyboard, or this device - who cares? It doesn't work and I don't have the knowledge or patience to find out how to make it work as it should. It's just not plug'n'play as far as I am concerned so I'm going to junk it and buy another dongle, using the spec of this one as the model of what I don't want.Update: I originally gave this dongle 2* but I've increased its rating to 3* as I replaced it with a Kinovo BTD-300 and that did exactly the same. I can't award any more than 3* as I really don't know if it's good or not. So it seems it's not the dongle, it's either the hardware of my PC or (more likely) a bug in Windows 10 Pro 64. If not used for a few hours it declares a Bluetooth driver fault, whether its just left running or the power plan allows any sort of system power-down if not used. Be aware that trying to add Bluetooth to a non-Bluetooth capable Windows 10 system may not be a good idea! I continue to struggle with Windows 10 updates, I can't turn them off but some won't install properly either so maybe there's a clue there.