From what I understand it is more common to use the B scheme when wiring a plug but just want to make sure before I dig into this. The cable will go up the wall, into a wall insert and then a new cable plugged from the insert to a laptop. The other end will plug directly to a port in a Linksys router. Later on I may install a second wall insert so instead of plugging directly into the router it would go wall insert and then router.
Does it matter if A or B is used unless you need a crossover? All home equipment.