Sony PCV-L400 - Manual (Page 62)

VAIO Computer Reference Manual 54
Auxiliary (AUX) Connector
The AUX connector is a standard 4-pin ATAPI-style 2.54 mm single line
header connector for external audio sound input.
AUX connector
Pin
Signal
1 Left Line In
2 GND
3 GND
4 Right Line In
KY0095.VSD
AUX
1 4