Mate just get the powered LAN plugs about £60 for two good ones just plug one in downstairs and one upstairs use the existing wiring.
MUCH easier.
Otherwise.. Get Cat 6 and 50 meters should be fine without a booster!
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Previously: 2003 Peugeot 206 1.6 8v | 2006 E90 320d M-Sport, 19" BBS CH, Full Ice-cold JL audio install, August 2010 Total BMW 6 page feature car. | 2003 Nissan 350Z GT Coupe 286BHP
Now:2010 E92 LCI 335d M-Sport
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