Ethernet Straight-Through Cable pin configuration
| Pin | Function | Wire Color |
| 1 | Transmit (+) | White-Orange |
| 2 | Transmit (-) | Orange |
| 3 | Receive (+) | White-Green |
| 4 | -- | Blue |
| 5 | -- | White-Blue |
| 6 | Receive (-) | Green |
| 7 | -- | White-Brown |
| 8 | -- | Brown |
Above values are relative to the cable connector, not the NIC.
The TIA/EIA 568B straight through cable consists of four pairs of twisted pair lines. These ethernet cables can be shielded twisted pairs (STP); screened twisted pairs (ScTP); or most commonly, unshielded twisted pairs (UTP). The twisted pairs serve to cancel out the any RF/EM (radio-frequency/electromagnetic) noise through the lines.
