What is a Straight Through Cable Pinout and How is it Used?
A Straight Through Cable Pinout is the most common type of Ethernet cable used to connect two different types of network devices. Imagine a conversation between two people who speak different languages; you need a translator. In networking, a straight-through cable acts as that translator, ensuring that data flows correctly from a device that transmits on one pin to a device that receives on the corresponding pin. This direct mapping is crucial for establishing a functional link. These cables are designed with a specific arrangement of wires within their connectors. Unlike crossover cables, where the transmit and receive pins are swapped, a straight-through cable maintains a one-to-one mapping. This means that pin 1 on one end connects to pin 1 on the other, pin 2 to pin 2, and so on, up to pin 8. This direct correspondence is what makes them suitable for connecting devices of different categories, such as a computer to a router or a computer to a switch. Here's a breakdown of the standard pinout for a Straight Through Cable (T568B on both ends, which is the most common standard):| Connector End 1 | Connector End 2 | Wire Color |
|---|---|---|
| Pin 1 | Pin 1 | White/Orange |
| Pin 2 | Pin 2 | Orange |
| Pin 3 | Pin 3 | White/Green |
| Pin 4 | Pin 4 | Blue |
| Pin 5 | Pin 5 | White/Blue |
| Pin 6 | Pin 6 | Green |
| Pin 7 | Pin 7 | White/Brown |
| Pin 8 | Pin 8 | Brown |
- Connecting a computer (DTE - Data Terminal Equipment) to a router or switch (DCE - Data Communications Equipment).
- Connecting a modem to a router.
- Connecting a network interface card (NIC) in a computer to a hub or switch.