Cable Type Max. Length Connector
10BASE-T Cat. 3, 4, 5100-ohm UTP 100 m (328 ft) RJ-45
100BASE-TX Cat. 5 100-ohm UTP 100 m (328 ft) RJ-45
100BASE-FX
50/125 or 62.5/125 micron
core multimode fiber (MMF)
2 km (1.24 miles) SC or ST
6.2 100BASE-TX/10BASE-T Pin Assignments
With 100BASE-TX/10BASE-T cable, pins 1 and 2 are used for transmitting data, and pins 3 and 6 for
receiving data.
RJ-45 Pin Assignments
Pin Number Assignment
1 Tx+
2 Tx-
3 Rx+
6 Rx-
Note: "+" and "-" signs represent the polarity of the wires that make up each wire pair.
All ports on this switch support automatic MDI/MDI-X operation, you can use straight-through cables for
all network connections to PCs or servers, or to other switches or hubs. In straight-through cable, 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-)
