T
WISTED
-PAIR
CABLE
AND
PIN
ASSIGNMENTS
B-3Straight-Through WiringIf the twisted-pair cable is to join two ports and only one of the ports has
an internal crossover (MDI-X), the two pairs of wires must be straight-
through. (When auto-negotiation is enabled for any RJ-45 port on this
switch, you can use either straight-through or crossover cable to connect
to any device type.)
You must connect all four wire pairs as shown in the following diagram to
support Gigabit Ethernet connections.
Figure B-2 Straight-through Wirin g
White/OrangeStripe
Orange
White/GreenStripe
Green
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
EIA/TIA568B RJ-45 Wiring Standard
10/100BASE-TXStraight-through Cable
EndA EndB
Blue
White/BlueStripe
Brown
White/BrownStripe