【Ethernet Cable Pinouts】
（一）Standard Ethernet Cable
1. Straight-through Cable
a. Pin 1 – Pin 1
b. Pin 2 – Pin 2
c. Pin 3 – Pin 3
d. Pin 4 – Pin 4
e. Pin 5 – Pin 5
f. Pin 6 – Pin 6
g. Pin 7 – Pin 7
h. Pin 8 – Pin 8
2. Crossover Cable
a. Pin 1 – Pin 3
b. Pin 2 – Pin 6
c. Pin 3 – Pin 1
d. Pin 4 – Pin 4
e. Pin 5 – Pin 5
f. Pin 6 – Pin 2
g. Pin 7 – Pin 7
h. Pin 8 – Pin 8
（二）Gigabit Ethernet Cable
1. Straight-through Cable
a. Pin 1 – Pin 1
b. Pin 2 – Pin 2
c. Pin 3 – Pin 3
d. Pin 4 – Pin 4
e. Pin 5 – Pin 5
f. Pin 6 – Pin 6
g. Pin 7 – Pin 7
h. Pin 8 – Pin 8
2. Crossover Cable
a. Pin 1 – Pin 2
b. Pin 2 – Pin 1
c. Pin 3 – Pin 3
d. Pin 4 – Pin 4
e. Pin 5 – Pin 5
f. Pin 6 – Pin 6
g. Pin 7 – Pin 7
h. Pin 8 – Pin 8
（三）10 Gigabit Ethernet Cable
1. Straight-through Cable
a. Pin 1 – Pin 1
b. Pin 2 – Pin 2
c. Pin 3 – Pin 3
d. Pin 4 – Pin 4
e. Pin 5 – Pin 5
f. Pin 6 – Pin 6
g. Pin 7 – Pin 7
h. Pin 8 – Pin 8
2. Crossover Cable
a. Pin 1 – Pin 2
b. Pin 2 – Pin 1
c. Pin 3 – Pin 6
d. Pin 4 – Pin 4
e. Pin 5 – Pin 5
f. Pin 6 – Pin 3
g. Pin 7 – Pin 7
h. Pin 8 – Pin 8
（四）Conclusion
Ethernet cable pinouts are essential for establishing proper connectivity between devices. The standard Ethernet cable pinout, known as straight-through cable, follows a simple one-to-one connection of each pin. This is commonly used for connecting devices of the same type, such as a computer to a switch or a router. On the other hand, crossover cable pinouts are used when connecting devices of different types, like two computers or two switches. The pins are crossed to ensure proper communication.
With the emergence of faster Ethernet technologies, such as Gigabit Ethernet and 10 千兆位元以太網, the pinouts also evolved to accommodate higher data transfer rates. 然而, the basic principles remain the same, with straight-through cable being used for same-type devices, and crossover cable for different-type devices.
It is important to correctly identify the pinouts and use the appropriate cables to avoid connectivity issues. By understanding the different Ethernet cable pinouts, users can set up reliable and efficient networks to meet their specific requirements.
