Switch User Manual

Publication 1783-UM002C-EN-P - April 2009 77
Chapter 4
Use a straight-through cable to connect two ports only when one port is
designated with an X. Use a crossover cable to connect two ports when both
ports are designated with an X or when both ports do not have an X.
You can use Category 3, 4, or 5 cabling when connecting to
10BASE-T-compatible devices. You must use Category 5 cabling when
connecting to 100BASE-TX-compatible devices
.
Two Twisted-pair Crossover Cable Schematic
Four Twisted-pair Crossover Cable Schematic
IMPORTANT
Use a four twisted-pair, Category 5 cable when connecting to a
1000BASE-T-compatible device
Switch
3 TD+
6
TD–
1 RD+
2
RD–
Switch
3 TD+
6 TD–
1 RD+
2 RD–
H
5579
1
TPO+
2
TPO-
3
TP1+
6
TP1-
1 TP0+
Switch Switch
2 TP0-
3 TP1+
6 TP1-
4
TP2+
5
TP2-
7
TP3+
8
TP3-
4 TP2+
5 TP2-
7 TP3+
8 TP3-
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