HP 1820-24G-PoE Plus, Installation And Getting Started Manual

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A-9
Specifications
Twisted-Pair Cable/Connector Pin-Outs
Straight-through Twisted-Pair Cable for
10 Mbps or 100 Mbps Network Connections
Because of the Auto-MDIX operation of the 10/100 ports on the switch, for all
network connections, to PCs, servers or other end nodes, or to hubs or other
switches, you can use straight-through cables.
If any of these ports are given a fixed configuration, for example 100 Mbps/
Full Duplex, the ports operate as MDI-X ports, and straight-through cables
must be then used for connections to PC NICs and other MDI ports.
Cable Diagram
N o t e
Pins 1 and 2 on connector “A” must be wired as a twisted pair to pins 1 and 2
on connector “B”.
Pins 3 and 6 on connector “A”
must be wired as a twisted pair to pins 3 and 6
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) Computer, Transceiver, or
Other End
Signal Pins Pins Signal
r
receive -
tr
transmit - 1
2
3
6 1
2
3
6 tr
transmit -
r
receive -