HP 6120XG HP ProCurve Series 6120 Blade Switches Installation and Getting Star - Page 50

Crossover Twisted-Pair Cable for 10 Mbps or 100 Mbps Network Connection

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Cabling and Technology Information Crossover Twisted-Pair Cable for 10 Mbps or 100 Mbps Network Connection The HP Auto-MDIX operation of the 10/100 ports on the switch also allows you to use crossover cables for all network connections, to PCs, servers or other end nodes, or to hubs or other switches. If any of these ports are given a fixed configuration, for example 100 Mbps/Full Duplex, the ports operate as MDI-X ports, and crossover cables must be then used for connections to hubs or switches or other MDI-X network devices. Cable Diagram Note . Pins 1 and 2 on connector "A" must be wired as a twisted pair to pins 3 and 6 on connector "B". Pins 3 and 6 on connector "A" must be wired as a twisted pair to pins 1 and 2 on connector "B". Pins 4, 5, 7, and 8 are not used in this application, although they may be wired in the cable. Pin Assignments Switch End (MDI-X) Signal Pins receive + 1 receive - 2 transmit + 3 transmit - 6 Hub or Switch Port, or Other MDI-X Port End Pins Signal 6 transmit - 3 transmit + 2 receive - 1 receive + 42

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Cabling and Technology Information
Crossover Twisted-Pair Cable for
10 Mbps or 100 Mbps Network Connection
The HP Auto-MDIX operation of the 10/100 ports on the switch also allows you to use crossover
cables for all network connections, to PCs, servers or other end nodes, or to hubs or other
switches.
If any of these ports are given a fixed configuration, for example 100 Mbps/Full Duplex, the
ports operate as MDI-X ports, and crossover cables
must
be then used for connections to hubs
or switches or other MDI-X network devices.
Cable Diagram
Note
Pins 1 and 2 on connector “A”
must
be wired as a twisted pair to pins 3 and 6 on connector “B”.
Pins 3 and 6 on connector “A”
must
be wired as a twisted pair to pins 1 and 2 on connector “B”.
Pins 4, 5, 7, and 8 are not used in this application, although they may be wired in the cable.
.
Pin Assignments
Switch End (MDI-X)
Hub or Switch Port, or Other
MDI-X Port End
Signal
Pins
Pins
Signal
receive +
receive -
transmit +
transmit -
1
2
3
6
6
3
2
1
transmit -
transmit +
receive -
receive +