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Wall plates provide the finishing touch to your cable routing. A wall plate can come in a variety of colors to match your room's decor and, when put on the wall, provide a nice neat frame for your cables or wires. There are electrical wall plates that cater to RJ-45 jacks, RCA jacks, speaker wires and more.
Experts say it is a good idea to leave an unused position in a wall plate for future expansion. You can use a blank insert to cover up the unused position if you'd like.