3Com 3C16702A - Manual (Page 15)

15
Refer to Figure 5 below to compare the wiring of a
straight-through and a crossover cable.
Figure 5 Straight-through Cable/Crossover Cable
1
Normal
port Pin Pin
Uplink
port
Rx+
Rx-
Tx+
Tx-
Tx+
Tx-
Rx+
Rx-
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
Normal
port Pin Pin
Normal
port
Rx+
Rx-
Tx+
Tx-
Rx+
Rx-
Tx+
Tx-
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8