B&B Electronics EIR405-SFP-T - Manual - Manual (Page 10)

Hardware Installation
7 Manual Document Number EIR-SFP-T-0912m
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All copper ports on the EIR405-SFP-T support automatic MDI/MDI-X operation, you
can use straight-through cables (See Figure below) for all network connections to PCs or
servers, or to other switches or hubs. In straight-through cables, pins 1, 2, 3, and 6, at one
end of the cable, are connected straight through to pins 1, 2, 3 and 6 at the other end of
the cable. The table below shows the 10BASE-T / 100BASE-TX MDI and MDI-X port
pin outs.
Pin MDI-X Signal Name MDI Signal Name
1 Receive Data plus (RD+) Transmit Data plus (TD+)
2 Receive Data minus (RD-) Transmit Data minus (TD-)
3 Transmit Data plus (TD+) Receive Data plus (RD+)
6 Transmit Data minus (TD-) Receive Data minus (RD-)
Straight Through Cable Schematic
Cabling
Cross Over Cable Schematic
Use unshielded twisted-pair (UTP) or shielded twisted-pair (STP) cable.
10Mbps: Use category 3, 4, 5 or greater cable
100Mbps: Use category 5 or greater
1000Mbps: Use category 5e or greater cable
Cable distances should be less than 100 meters (328 ft.) long.