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  • RJ45 CAT 5 6 LAN Ethernet Splitter Connector Adapter PC
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RJ45 CAT 5 6 LAN Ethernet Splitter Connector Adapter PC

475 customer reviews
| 11 answered questions

List Price: $5.99
Price: $3.70 & FREE Shipping on orders over $35. Details
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In Stock.
Ships from and sold by Amazon.com. Gift-wrap available.
  • Convert and increase your Ethernet connections from 1 to 2 sockets
  • Allow two computers to share high speed DSL, cable modem and Ethernet ports
  • Convert a single RJ45 outlet to two RJ45 sockets easily
  • Compact design. 8 wire RJ-45T adapter, parallel wiring
  • Connector: 3 x RJ45 female
15 new from $0.01
$3.70 & FREE Shipping on orders over $35. Details In Stock. Ships from and sold by Amazon.com. Gift-wrap available.

Frequently Bought Together

RJ45 CAT 5 6 LAN Ethernet Splitter Connector Adapter PC + Mediabridge Cat5e Ethernet Patch Cable (15 Feet) - RJ45 Computer Networking Cord - Blue - (Part# 31-399-15B ) + Mediabridge Cat5e Ethernet Patch Cable (25 Feet) - RJ45 Computer Networking Cord - Blue
Price for all three: $17.68

Buy the selected items together

Technical Details

  • Brand Name: eForCity
  • Model Number: 257944
  • Item Package Quantity: 1

Product Description

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


Product Details

  • Product Dimensions: 6 x 1 x 1 inches ; 0.6 ounces
  • Shipping Weight: 3.2 ounces (View shipping rates and policies)
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item can be shipped to select countries outside of the U.S. Learn More
  • ASIN: B003C2QS90
  • California residents: Click here for Proposition 65 warning.
  • Item model number: 257944
  • Average Customer Review: 2.9 out of 5 stars  See all reviews (475 customer reviews)
  • Amazon Best Sellers Rank:
  • Date first available at Amazon.com: May 10, 2004
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Customer Questions & Answers

Customer Reviews

Most Helpful Customer Reviews

354 of 362 people found the following review helpful By D. Dean on June 24, 2011
I am writing this review to help everyone out.

This splitter will take the input of one Ethernet RJ-45 connection and physically split it into two RJ-45 Ethernet connections. Please notice that you can only have one device turned-on at a time. This is a limitation of the Ethernet physical signaling. If you try to have two devices use the connection simultaneously, it will not work.

If you need two physical connections both on at the same time from one connection, please look for a switch like a 4-port, 5-port, or 8-port Dlink/Linksys/Netgear/HP/etc. More money, but this is the correct way to 'split' connections when you can't run more Ethernet cabling.

Hope this helps everyone!
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148 of 156 people found the following review helpful By comedian on September 29, 2010
Does what it's supposed to do which is split the signal. I bought it knowing I could only use the internet on one device at a time, but thought I could have both devices on at the same time. This is not true. I have it hooked up to my Mac and my Xbox 360. If either one is on, the other must be off for the internet to work. This is frustrating and inconvenient but much cheaper than a router so I'm fine with the situation. You should know that before you purchase.
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111 of 130 people found the following review helpful By Dorbel Tweeter on August 4, 2012
[*** see Important Update to this review, at bottom!]

The reviewers who gave this splitter a bad rating are dead wrong. They do not understand what this device does. They failed to look at the schematic illustration above (alongside the other photos of it), which clearly shows how to use it.

Wrong reviews are annoying - if you are too lazy to read the instructions & educate yourself the tiniest bit about networking, then you have no business writing reviews to spread your stupidity and ignorance around the world. If you won't do your homework, then shut up - stop pretending that you did, and stop complaining that you failed the test: You *deserved* to fail it.

The purpose of these splitters is *NOT* to be able to buy a cheap splitter instead of having to buy either (a) a Modem-with-built-in-router/switch, or (b) a Modem PLUS a separate external router/switch, plus (c) two long cables to connect it to your two computers. That is what the ignorant people who wrote the bad reviews imagined that they could do with this splitter. Wrong, wrong, wrong!!

As the infamous (& fired) tech support person of legend once advised a customer: "Sir, the best solution to your problem is to (a) pack the computer back into its box, (b) take it back to the store, and (c) ask for a refund -- because you are TOO FRICKING STUPID to use a computer!"

For those who would prefer to educate themselves rather than abandoning their hopes of ever using computers, read on...

You need to purchase TWO of these. And employ them together, as shown in schematic. Then, yes, you can use two computers (or xboxes etc.) simultaneously.
Read more ›
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16 of 19 people found the following review helpful By K. Grimsley on April 25, 2012
You're all just complaining because you are too cheap to buy a router or switch to handle multiple internet connections simultaneously. This is a splitter, not a port switcher. It does exactly what it's supposed to do, it physically splits one line into two. That doesn't mean you can use both at the same time, there's no processing functionality in this item.

Compare it to a railroad. You have the railroad switch (this splitter) and the transfer station (a router or switch). You can have multiple trains going through the transfer station at the same time, however you can only have one train utilize a railroad switch at a time. Both are useful, however serve different purposes.

Go buy a $30 switch if you can't handle turning off one connection while using the other, and stop giving one star reviews to items that work properly. You're just too lazy to do some research on what you're buying.
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16 of 19 people found the following review helpful By CMSnCKB on March 9, 2013
Verified Purchase
Incorrectly named, I will attempt to upload picture of disassembled product. Each unit consists merely of eight wires cleverly bent so as to never cross another. Each of the eight(8) wires conducts to the same pin number for all 3 female sockets. This means a pair of these placed on ether end of an ethernet cable will not enable the cable to support two cat5e devices communicating the same time.

Poor quality. Of the two units purchased, one was mis-assembled, as one socket only had 7 conductors available for a RJ45 male jack.
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41 of 55 people found the following review helpful By Paul1114 on February 17, 2011
There seems to be a big misunderstanding about how this item works. It's not going to split one source into two! You need a PAIR of these to do that! Ethernet has 8 wires, right? Well, 10/100mb connections only use four of them. Splitters like these allow you to use four wires on each side, but you have to use ANOTHER one of these on the other end, and feed it two connections from a switch and/or router. This is great if you only have one wire run to a location where you need two.
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12 of 16 people found the following review helpful By M. Miller on November 28, 2011
Verified Purchase
this was a great device and does just what it suppose to. most people I have read gave it a low review because they dont know what it does. they think it splits the line in two so that they can run two devices from one modem at the same time like haveing two modems. but you cant you cand hook up two devices like I did my xbox and ps3 are both connected with the splitter so when I play one of them I will be online but I cant play the xbox and ps3 at the same time and b online at the same time. but then again I dont play both at the same time. I got tired of moving my cable from one unit to the other so I both this splitter so I dont have to. but I will say that I did try to hook up a lap top to it but it wouldnt work. not computer savy enough to explain why it would nor did I look into it to find the problem since it works great with my game systems thats why I bought it so no problems for me on that end.
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RJ45 CAT 5 6 LAN Ethernet Splitter Connector Adapter PC
This item: RJ45 CAT 5 6 LAN Ethernet Splitter Connector Adapter PC
Price: $3.70
Ships from and sold by Amazon.com

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