As it currently goes, I have a cable going to bedroom from living room switch but this ends about 4 or 5 feet from where my pc, consoles, smart tv is etc.
Currently I just use the pc and run a single cable a few feet to the bedroom switch but I have decided to use my smart tv when pc is off or play online games on xbox.
I also want to have a cable going to 2nd bedroom as I have a 78 meg connection but can only get about 40 wireless and if I download something in 2nd bedroom I have to currently either bring my laptop into living room or run a 10m cable into bedroom and have the extension lead and long power supply cable to connect the 2 but means whilst doing so I cannot use laptop and in the future when I get some new parts I will put my old desktop in there.
I have plenty of 10m cables but only one or two 20m cables, I assume 20m is perfect size if 10m gets about half way(could be more or less hard to work out just by looking)
So would a cheap 99p coupler work or would it it just be badly built and affect speed and quality?