Connector - Ethernet 100Base-T4 (RJ45)100Base-T4 uses all four pairs. 100Base-TX only uses twopairs.RJ45 FEMALE CONNECTOR at the network interface cards/hubs. RJ45 MALE CONNECTOR at the cables.  | Belegung für EIA568A und EIA568A |  | (at the network interface cards/hubs) |  | (at the cables) |
Pin | Name | Description |
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1 | TX_D1+ | Tranceive Data+ | 2 | TX_D1- | Tranceive Data- | 3 | RX_D2+ | Receive Data+ | 4 | BI_D3+ | Bi-directional Data+ | 5 | BI_D3- | Bi-directional Data- | 6 | RX_D2- | Receive Data- | 7 | BI_D4+ | Bi-directional Data+ | 8 | BI_D4- | Bi-directional Data- |
Note: TX & RX are swapped on Hub's. Don't know about Bi-directional data.
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