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RJ-45 pin allocation, X19 RJ-45 connector pins are configured as shown:Ethernet RJ-45, X19
Pin Signal 802.3af End-Span (mode A) 802.3af Mid-Span (Mode B) Description
1 TXD+ Negative VPort Transmit data +
2TXD- Negative V
Port Transmit data -
3 RXD+ Positive VPort Receive data +
4 EPWR+ Positive VPort Power from switch +
5 EPWR+ Positive VPort Power from switch +
6 RXD- Positive VPort Receive data -
7 EPWR+ Negative VPort Power from switch -
8 EPWR+ Negative VPort Power from switch -