I think I have four or six Ethernet port in my house and it only works on living room
so, I want to use Ethernet on 2nd floor but it's not working and I think modem connected with just one room
I don't know anything about Ethernet connection..
white cable is connected to xfinity modem and I don't know what does blue and gray cable support or stand for
and how do I fix this problem?
also I was searching and find out Gigabit Switch do I need this?
if I need Gigabit Switch do I just connect with one with xfinity modem and seven other cable(picture)?
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