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Appendix A Twisted-pair and Pin
Distribution
For the connection of 10Base-T/100Base-TX, the twisted-pair must have two
pair cable. Each pair is distinguished with two different colors. For example,
one strand is green, and the other is the alternate of green and white stripes.
RJ-45 connector should be equipped at both ends of the cable.
Warning:
Don’t insert a telephone plug into any RJ-45 port. Only use twisted-pair with RJ45
connectors at both ends conforming to FCC standard.
Fig. A-1 Shows how the connector of RJ-45 is numbered please make sure
that the inserting direction is correct.
1
8
8
1
Figure A-1 Connector of RJ-45
Pin distribution of 10Base-T/100Base-TX
Unshielded twisted- pair (UTP) or shielded twisted-pair (STP) will be used
for the connection of RJ-45: for the connection of 10Mbps, category 3, 4 and
5 of 100 ohm will be used, and cat.5 of 100 ohm will be used for 100Mbps.
Additionally, do make sure that the connecting length of any twisted-pair
shall not exceed 100 meter.
Port of RJ-45 supports automatic MDI/MDI-X operation, PC or server may
be connected with straight-through cable, or connect with other switch or