Lantronix
SM4T4DPA Install Guide
33867 Rev. A
Page
18
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29
Making Network Connections
Connecting Network Devices
The switch is designed to be connected to 10, 100 or 1000Mbps network cards in PCs and servers, as well as to
other switches and hubs. It may also be connected to remote devices using optional SFP transceivers.
Twisted-Pair Devices
Each device requires an unshielded twisted-pair (UTP) cable with RJ-45 connectors at both ends. Use Category 5,
5e or 6 cable for 1000BASE-T connections, Category 5 or better for 100BASE-TX connections.
Cabling Guidelines
The RJ-45 ports on the switch support automatic MDI/MDI-X pinout configuration, so you can use standard straight-
through twisted-pair cables to connect to any other network device (PCs, servers, switches, routers, or hubs).
See Appendix B for further information on cabling.
Caution
: Do not plug a phone jack connector into an RJ-45 port. This will damage the switch. Use only twisted-pair
cables with RJ-45 connectors that conform to FCC standards.
Connecting to PCs, Servers, Hubs and Switches
Step 1. Attach one end of a twisted-pair cable segment to the device’s RJ-45 connector.
Making Twisted-Pair Connections
Step 2. If the device is a network card and the switch is in the wiring closet, attach the other end of the cable
segment to a modular wall outlet that is connected to the wiring closet. (See the section “Network Wiring
Connections.”) Otherwise, attach the other end to an available port on the switch.
Make sure each twisted pair cable does not exceed 100 meters (328 ft) in length.
Note
: Avoid using flow control on a port connected to a hub unless it is actually required to solve a problem.
Otherwise, back pressure jamming signals may degrade overall performance for the segment attached to
the hub.
Step 3. As each connection is made, the Link LED (on the switch) corresponding to each port will light green (1000
Mbps) or amber (100 Mbps) to indicate that the connection is valid.