Hardware pinouts information and cables schemes

Ethernet 1000Base-T (Gigabit ethernet) pinout

network connector

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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.

8 pin RJ45 (8P8C) female connector layout

8 pin RJ45 (8P8C) female connector
at the network interface cards/hubs



1000BASE-T (also known as IEEE 802.3ab) is a standard for gigabit Ethernet over copper wiring. It requires, at least Category 5 cable (the same as 100BASE-TX), but Category 5e ("Category 5 enhanced") or Category 6 cable may also be used and are often recommended. 1000BASE-T requires all four pairs to be present and is far less tolerant of poorly installed wiring than 100BASE-TX.

Pin Name Description
1BI_DA+Bi-directional pair A +
2BI_DA-Bi-directional pair A -
3BI_DB+Bi-directional pair B +
4BI_DC+Bi-directional pair C +
5BI_DC-Bi-directional pair C -
6BI_DB-Bi-directional pair B -
7BI_DD+Bi-directional pair D +
8BI_DD-Bi-directional pair D -

Each network segment cable length may be up to 100 meters, although several chip manufacturers claim 150 meters. Autonegotiation is a requirement for using 1000BASE-T, according to the standard. Several device drivers will allow you to force 1000 Mbps full duplex to eliminate autonegotiation issues.

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Pinouts.ru > Network hardware interfaces pinouts listing >  Pinout of Ethernet 1000Base-T (Gigabit ethernet) and layout of 8 pin RJ45 (8P8C) female connector and 8 pin RJ45 (8P8C) male connector
Document status: correct
Source(s) of this and additional information: IEEE Std 802.3, 2000 Edition 6 reports
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