Why You're Failing at 유튜브 커뮤니티

https://www.evernote.com/shard/s530/sh/c23dd144-5389-f57c-4bfc-33e0265df5fc/b491a6a405f74efd4f7902bc92548fe1

Typically, signal boosters and repeaters require an external electrical power supply to spice up the sign, but because of its design, HDMI can in fact be extended without having an external power supply.