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Ethernet 1000Base-T
1000 Base-T uses all pairs for bidirectional traffic in the RJ45 connector. Cables used should be
of Category 5e(nhanced), even though Category 5 cables usually works too.
(at the network interface cards/hubs)
(at the cables)
RJ45 FEMALE CONNECTOR at the network interface cards/hubs.
RJ45 MALE CONNECTOR at the cables.
Pin Name Description
1 BI_DA+ Bi-directional pair A +
2 BI_DA- Bi-directional pair A -
3 BI_DB+ Bi-directional pair B +
4 BI_DC+ Bi-directional pair C +
5 BI_DC- Bi-directional pair C -
6 BI_DB- Bi-directional pair B -
7 BI_DD+ Bi-directional pair D +
8 BI_DD- Bi-directional pair D -
Ethernet 100Base-T4
100Base-T4 uses all four pairs. 100Base-TX only uses two pairs.
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