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For some years the cable was laying under a bedroom door. Now I need to slightly move it. To get a better idea look at this picture.

On the left is the current "cable status" and on the right is how I want to make it.
My problem is the cable isn't that long and I need to use a second cable to achieve this. Here comes the main problem - I'm using the cable for two computers. It is a straight cable with four RJ-45.

So I wonder if I get 2 RJ45 Lan Connectors and put them at the green circles, then connect the two lan cables would that work properly? I only need to extend the cable.

Is there another approach to this problem?
Any suggestions are welcome! :)

Edit: The cable is going all around the apartment. Probably it's about 20-25meters long until it goes into my server. The cable goes behind many heavy furniture and though a couple of walls. That's why I'm looking for an alternative way. :)

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How long is the cable in total? And what is running over the cable? (Is it 10Mbps? 100Mbps? 1000Mbps?) –  David Schwartz Jan 31 '12 at 2:15
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I'm guessing the cable is under carpet or something? Which would explain why you won't want to run new cable all the way? Yes, I don't see any reason why it wouldn't work. –  opsin Jan 31 '12 at 3:17
    
It's going all around the apartment. Probably it's about 20-25meters long until it goes into my server. The cable goes behind many heavy furniture and a couple of walls... That's why I don't want to get a new cable :) –  tftd Jan 31 '12 at 16:04
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4 Answers 4

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if I get 2 RJ45 Lan Connectors and put them at the green circles, then connect the two lan cables would that work properly?

Yes, it will work properly (if you connect all properly)

I just note - in order to decrease "points of failures" if you can pull cable near the door, I would have thought about single connection (pull existing cable, place around the door, missing a few meters near server fill by new short cable /connector-socket-connector/, or cable plus )

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Get a longer ethernet cable, it probably won't be that expensive, and much more reliable.

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Yeah. I thought about that too. It's definitely the "right" way to go, though it won't be as easy as it sounds. (Look at my edit). –  tftd Jan 31 '12 at 16:08
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Unless you plan on cutting the existing cable and crimping on two new RJ45s so you actually splice the new cable in the middle like you drew ( bad idea ), you only need one coupler to connect the end of the existing cable to the new one, somewhere between the door and wherever it ultimately goes.

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but if he intends to do that, he might as well get fresh cable and crimp it –  Journeyman Geek Jan 31 '12 at 5:38
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Figure out your hourly rate and the cost of new cabling, then buy a switch or hub for that price.

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I don't see why I would use a switch/hub for this task? –  tftd Feb 1 '12 at 22:40
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