Sony PCV-E203 - Manual (Page 64)

VAIO MicroTower System Reference 56
Fan Connectors
The CHA-Fan and CPU-Fan connectors are 1 x 3-pin straight header
connectors and have the same pinout. PS-Fan is a 2 x 3-pin connector that
controls the cooling fan in the power supply.
CHA and CPU Fan Connectors
Pin Signal Name
1 LOGIC GND
2 +12 VDC (FAN PWR ON)
3 FANTACH3
PS Fan Connector
Pin Signal Name
1 Reserved
2 Fan On/Off
3 Reserved
4-6 Reserved
KY0034.VSD
CPU Fan
(not used)
1
3
6
4
3
1
PS Fan
1 3
CHA Fan (not used)