Windows 10: USB wi-fi dongle for desktop PC

I live in the UK and recently decided to upgrade my home system.
I previously used a Dell PC in my conservatory and an identical one in the main house, upstairs in an office (small bedroom).
The office has a phone socket that runs outside the house and is joined to the BT cable via a star connection.

The upgrade to BT fibre broadband now gives 37Mbps in the conservatory, but the guy from BT Openreach disconnected my office feed as he said it's no longer allowed to star wire.

How can I get a signal to my office PC, as it's too cold to use the conservatory in the winter?
I thought about using a wi-fi dongle and want to get something decent, compatible with Win 10, please.
I could run about 40 metres of cable from the router, but it's messy and hard to hide. Much better if wi-fi is any good.

:)

 

Desktop and Laptop Doesn't Detect Dongle Plugged into TV


I recently purchased a Wi-Fi Miracast dongle from Amazon, but neither PC detects it.
On the PC end, I have a Wi Fi cable which plugs into a USB port,. I do not have Wi Fi on the desktop but do on the
laptop but still,nothing works.

I have heard that the HDMI dongle and the Wi Fi cable yo USB, doesn't require PC Wi -Fi, is this correct?

One other point, Miracast did not come with Windows 10, even though I have done a couple of clean installations.

 

Desktop and Laptop Doesn't Detect Dongle Plugged into TV

I think he means a Wi-Fi Antenna Cable.

 

Desktop and Laptop Doesn't Detect Dongle Plugged into TV


There were two components in the package, HDMI dongle , and a Wi Fi cable which plugs into a USB port of the PC..
There is no built in Wi Fi in my desktop, but there is in my laptop. I have no idea of the frequency the dongle works on, due tack of information that came with it.