H3C Technologies H3C SecPath U200-A U200-M U200-S - Manual (Page 78)

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Figure 55 RJ-45 connector pinout diagram
NOTE:
The RJ-45 Ethernet interfaces use category 5 or higher Ethernet twisted pair cables for connection.
EIA/TIA cabling specifications define two standards, 568A and 568B, for cable pinouts.
• Standard 568A—pin 1: white/green stripe, pin 2: green solid, pin 3: white/orange stripe, pin 4:
blue solid, pin 5: white/blue stripe, pin 6: orange solid, pin 7: white/brown stripe, pin 8: brown
solid.
• Standard 568B—pin 1: white/orange stripe, pin 2: orange solid, pin 3: white/green stripe, pin 4:
blue solid, pin 5: white/blue stripe, pin 6: green solid, pin 7: white/brown stripe, pin 8: brown
solid.
Ethernet twisted pair cables can be classified into straight through and crossover cables based on their
pinouts:
• Straight-through—The pinouts at both ends comply with standard 568B, as shown in Figure 56 .
• Crossover—The pinouts at one end comply with standard 568B, and those at the other end
comply with standard 568A, as shown in Figure 57 .
Figure 56 Straight-through cable