
Dual-Speed Stackable Hubs User’s Guide
Cables and Connectors
26
Straight Twisted-Pair Cable Pinouts
Contact
MDI-X Signal
MDI Signal
1
RD+ (receive)
TD+ (transmit)
2
RD- (receive)
TD- (transmit)
3
TD+ (transmit)
RD+ (receive)
4
Not used
Not used
5
Not used
Not used
6
TD- (transmit)
RD- (receive)
7
Not used
Not used
8
Not used
Not used
Crossover Cables
When cascading or connecting the hub to another switch, bridge,
or hub through the UTP port, a modified crossover cable is neces-
sary. With a crossover cable, two pairs of wires are switched at
one connector end. Carry out the following steps to create a cus-
tomized, crossover twisted-pair cable:
1.
Leave one end of the cable as is, with the RJ-45 connector
intact. The wiring at just one end of the cable needs to be
modified.