I currently have wired internet by using a 30M LAN cable to connect my PC to the router in the other end of my house. My brother, in the room opposite, would like wired as well (since wireless is crap for him).
I proposed using a ethernet switch i have to split my wire so both can connect. See diagram below:

Will i notice any slow down or decreased quality in my connection if we both used the switch to connect to the router via a single wire? (loss of quality due to using a single wire, not having two computers on the Internet at the same time)?
Also, what sort of temps can these mini switches take? If possible, i'd like to place it in the attic where my current ethernet cable runs, but i know it gets pretty cold and pretty hot up there :|:
I proposed using a ethernet switch i have to split my wire so both can connect. See diagram below:
Will i notice any slow down or decreased quality in my connection if we both used the switch to connect to the router via a single wire? (loss of quality due to using a single wire, not having two computers on the Internet at the same time)?
Also, what sort of temps can these mini switches take? If possible, i'd like to place it in the attic where my current ethernet cable runs, but i know it gets pretty cold and pretty hot up there :|:
Comment