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how can i make a ethernet cord splitter so i can hook up two computers to my one (cable one) modem?

i have a desktop in two rooms of my house and only one modem with just one ethernet port on it. so i can only hook up one computer at a time. i need both desktops hooked up and dont have the money for a modem with 2 ethernet ports on it. i have lots of extra random cords layin around. i usually can figure out how to do this sort of thing but im stuck. my modem has the cable home phone and internet all on it and it all has to b plugged in for anything to work. i got the cable to another end of the house by taking a short cable cord and plugging it into a splitter. so i could run a cable cord to my living room and my other room without having to pay for extra rooms. but i cant do that with the internet and i need to know how. can someone please help me?

You could give one of these a try, I have used them many times in the past & have set up many networks both for companies & peoples homes where I know they are still being used.

http://cgi.ebay.co.uk/RJ45-1x2-Ethernet-Lan-Connector-Splitter-Adaptor-Plug-/300493571281?pt=LH_DefaultDomain_3&hash=item45f6d004d1

Not as good as using a switch or hub nor as flexible for additions in the future but if all you need is an extra port they work fine.
As it says in the description of that item:

"NOTE: This Ethernet splitter allows two computers to share one Ethernet line, but it doesn't support both computer to connect onto the internet simultaneously"

I don't think that's what the querant is looking for.
Good point well taken I missed that part of the advert.
I will have to check out the ones I used as they do allow both machines to access the web similtaneously, I bought some from a local computer/network supplier only last year so I know they are still available & they only cost two or three pounds each.
orksecurity3 years ago
It's not that simple, unfortunately. While the original Ethernet would let many computers tap into a single cable, the version being used now requires some active logic if you want to split one connection to two. That means an Ethernet Hub or Switch or Router.

The good news is that a simple hub is cheap. A four-port hub or switch (splitting the one Ethernet connection so it goes to up to four machines) can be purchased for as little as $20 at most stores which sell Ethernet cables.

(For your purposes, you probably don't care whether it's a hub or a switch... but for more information about the difference between these, a decent description can be found at http://www.duxcw.com/faq/network/hubsw.htm)
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