Sony PCV-RX270DS - Manual (Page 67)

System Board 53
Ethernet Connector
There is one Ethernet connector at the rear panel, which permits
connection to a 10Base-T/100Base-TX Ethernet network.
Ethernet connector
Pin
Signal Name
1 Tx+
2 Tx-
3 Rx+
4 N/C
5 N/C
6 Rx-
7 N/C
8 N/C
KY0103.VSD
Ethernet