The cable that connects to my rj45 only has 4 cables, blue, orange, blue stripe, orange stripe. When I connect them to their corresponding ports, there is no internet connection.(Blue = 4, Orange = 6, Blue stripe = 5, Orange stripe = 3) How can I connect them so that I get a connection? Any help would be appreciated.


Your cable is not a proper UTP network cable as defined by TIA/EIA 568. In fact, the pairs used by the 10Base-T (10 Mbps) and 100Base-TX (100 Mbps) ethernet are 1-2 and 3-6. The 1000Base-T (1 Gbps) standard requires all four pairs (wired as 1-2, 3-6, 4-5, 7-8).

You must use a TIA/EIA wiring standard, either TIA/EIA T568A (normally used for home networking) or TIA/EIA T568B (usually used in business networking). Either wiring standard will work, but you probably want the cable wired straight-through. You may need a crossover (one side T568A and the other T568B) under certain circumstances.

This is the TIA/EIA 568 wiring (for both A and B):

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The bottom line is that your cable cannot be used for a network cable.

  • Hmm, when I connect to Blue 8, Orange 4, Blue Stripe 1, Orange Stripe 3, I get a connection – Kevin Zhang Dec 19 '18 at 22:04
  • That will not actually work. If you really wired it that way, you cannot send data across that link. – Ron Maupin Dec 19 '18 at 22:08
  • Blue 8, Orange 6, Blue Stripe 1, Orange Stripe 3 worked with one of my desktops but not the other – Kevin Zhang Dec 19 '18 at 22:37

I finally got it to connect by following the 10BASE-T 100BASE-TX column that Ron posted. Blue strip 1, Blue 2, Orange Strip 3, Orange 6.

  • 10/100 Base Ethernet only requires 2 pairs, 1000 Base Ethernet requires the 4 pairs. – dangeroushobo Jan 25 at 14:12

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