An Ethernet crossover cable is a type of Ethernet cable used to connect computing devices together directly where they would normally be connected via a network switch, hub or router, such as directly connecting two personal computers via their network adapters. (Wikipedia)
To create crossover cable, we must know first how we count the pin position in RJ45. In the image illustrated in the left side, we can see that we count the pin from the bottom side, start from pin number 1 in left side until pin number 8 in right side.
We must sure that all pin are complete (8 pin), if not complete we must change with another RJ45 that have complete PIN. In my experience, i usually found a RJ45 that not have complete PIN, so we can’t use this. So you must carefully.
This image represent a Straight Ethernet Cable, both 2 RJ45 has same color arrangement, this straight cable usually use when your computer connect to Switch or router.
Different with cross ethernet cable or so called crossover ethernet cable. For cross ethernet cable, we need to switch the Green set of wires in place with the Orange set of wires.
All Image taken from blog.icalvyn.com
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