Consider something like this for example. This design has many variations, so you’ll have to be careful on a few things.

Make sure it has some pro version of Windows so you can use Remote Desktop if you wish. Otherwise you’re limited to TeamViewer, VNC, or some other.

Be sure it has plenty of USB ports. Mine came with 2x USB3 and 4x USB2 ports which is plenty for all my gear. I got 4GB RAM and 120GB SSD. You don’t need much to just control a scope, but you will need a drive big enough to hold Windows + all the subs you plan to capture.

I either run CAT5 cable from indoors to the computer or I’ll use WiFi but I often have problems with WiFi staying connected so I routinely use a wired connection for better stability. When I go “on the road” I will bring a small WiFi router and plug that in next to the PC. Then just connect to the computer from my tablet and run everything that way.