The RJ45 data cables we use to connect computers to a Ethernet switch is straight-throughcables. As noted above, the RJ45cable uses only 2-pairs of wires: Orange (pins 1 & 2) and Green (pins 3 & 6). Pins 4, 5 (Blue) and 7, 8 (Brown) are NOT used. RJ45 Color-Coded Scheme - IP Location Was this helpful?
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