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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.
Pin Number
1
2
3
6
1: The "+" and "-" signs represent the polarity of
the wires that make up each wire pair.
Because 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 pinouts.
Pin
1
2
3
6
No other pins are used.
RJ-45 Pin Assignments
Assignment
Tx+
Tx-
Rx+
Rx-
MDI-X Assignment
Input Receive Data +
Input Receive Data -
Output Transmit Data +
Output Transmit Data -
T
-P
C
WISTED
AIR
1
MDI Assignment
Output Transmit Data +
Output Transmit Data -
Input Receive Data +
Input Receive Data -
P
A
ABLE AND
IN
SSIGNMENTS
B-3
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