Don't Make This Silly Mistake With Your เพิ่มไลค์ไอจี
http://louisxyyc391.fotosdefrases.com/17-reasons-why-you-should-ignore-pmph-td-tam-xic
Even cables with created-in repeaters usually allow for for an external electrical power supply to get connected. This is often just a bit further safety for the sign and could be a good idea based on the problem