Sony PCV-E518DS - Manual (Page 69)

System Board 61
Serial 2 Connector
The Serial 2 connector (J24) is a 4-pin header connector mounted on the
system board.
Serial 2 connector
Pin Signal Name
1 TXD
2 RXD
3 GND
4 CTS
OM04701E.VSD
J24
1
4