Can't get RadioShack Gigaware Cat5 Splitter/Combiner to work

October 22, 2011 at 16:33:47
Specs: Windows 7
We have a modem that controls the input of Internet, Cable TV and Digital Phone to the home. I wanted to hook up two computers to use the internet at the same time, so I bought a Gigaware Cat5 Splitter/Combiner at Radio Shack. The sales person said it should work, but when I got it home only one of the computers works at a time.

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October 22, 2011 at 16:48:36
Read the details - it splits pairs 2 & 3 to one jack and pairs 1 to 4 to the other. Needs special wiring and will split only telephone lines. You need a router to split the signal to multiple devices.

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October 22, 2011 at 16:58:21
this is an ethernet splitter, not a phone line splitter. The sales person at radio shack said it would work

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October 22, 2011 at 17:15:21
The sales person at Radio Shack was wrong. You cannot split an Ethernet signal from a Modem to two device using a physical splitters. There will be confusion with the handshaking signals between the two computers to the Modem.

As Wizard-Fred says, you need a router using Network Address Translation to drive two computers from a single Modem. What you are attempting would result in both computers trying to use the same IP address. That will never work and for the same reason, not even a switch would work. It has to be a router.


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October 22, 2011 at 19:22:03
Read the technical specs and take it back for a refund, Office Depot, Office Max, or Best Buy should have a router on sale tomorrow for less than $40. RJ45 connectors don't necessarily mean internet.

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October 22, 2011 at 21:16:21
Absolutely, you definitely need a router.
I recommend one even of you have only one computer due to the hardware firewall that is part of it, for safety reasons.

You have to be a little bit crazy to keep you from going insane.

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October 23, 2011 at 09:40:02
A simple router should do it.

Many ISP's let you connect in various ways and they don't seem to ever offer free advice. Knowing how your ISP connects is the key. That is why in some cases a router either needs some advanced settings or can't work.

Posting details on the isp would help.

1/3 of highway deaths are caused by drunks. The rest are by people who can't drive any better than a drunk.

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