is that a phone extension cable or hub downstairs and running an ethernet cable upstairs to pc?
is it possible to conenct hub to test socket instead of via extension cable ?
"is it possible to conenct hub to test socket instead of via extension cable?"
The problem is that the desktop upstairs is quite old and doesn't have built-in wifi capabilities.
If in theory I bought a wifi adaptor for the upstairs computer, and connected the hub to the test socket - would I be likely to enjoy faster speeds?
it would be better if you had hub downstairs conencted to master and then ran ethernet cable instead of the extension cable and that connected to pc. that would give better connection for hub while maintaining a cable connection for your pc. cat 5e/6 ethernet cable is not expensive and can be bought from well known auction site
if you get that set up then post back with the stats if you need more help - there is always someone around to help