Quick Installation Guide
9
9
Port and Cable Assignments
RJ-45 Port Description
RJ-45 station ports (MDI-X) can be attached to any devices which use a standard
network interface (e.g., a workstation, server, bridge or router). RJ-45 daisy-chain
ports (MDI) can be cascaded to a station port on similar networking devices (e.g.,
another switch or hub). Use unshielded twisted-pair (UTP) or shielded twisted-pair
(STP) cable for RJ-45 connections: 100W Category 3, 4 or 5 cable for 10 Mbps
connections or 100W Category 5 cable for 100 Mbps connections. Also be sure
that the length of any twisted-pair connection does not exceed 100 meters (328
feet).
Pin
Assignment
(Station Port)
Assignment (Daisy-Chain
Port, other device)
1 Input Receive Data + Output Transmit Data +
2 Input Receive Data - Output Transmit Data -
3 Output Transmit Data + Input Receive Data +
6 Output Transmit Data - Input Receive Data -
4,5,7,8 Not Used Not Used
Schematics for both straight and crossover twisted-pair cable are shown below.
Straight-Through Crossover
(Switch) (Adapter) (Switch) (Switch)
1 IRD+ 1 OTD+ 1 IRD+ 1 IRD+
2 IRD- 2 OTD- 2 IRD- 2 IRD-
3 OTD+ 3 IRD+ 3 OTD+ 3 OTD+
6 OTD- 6 IRD- 6 OTD- 6 OTD-
EMI Certification
FCC Class A Certification (USA)
Warning: This equipment generates, uses, and can radiate radio frequency
energy and, if not installed and used in accordance with the instruction manual,
may cause interference to radio communications. It has been tested and found to
comply with the limits for a Class A digital device pursuant to Subpart B of Part
15 of FCC Rules, which are designed to provide reasonable protection against
such interference when operated in a commercial environment. Operation of this
equipment in a residential area is likely to cause interference, in which case the
user, at his own expense, will be required to take whatever measures are
required to correct the interference.
You may use unshielded twisted-pair (UTP) for RJ-45 connections - Category 3
or greater for 10Mbps connections, and Category 5 for 100Mbps connections.
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