Modem In Connector - Sony VAIO PCV-E204 Reference Manual

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VAIO MicroTower System Reference

Modem In Connector

The Modem In connector (J9) on the motherboard is a 1 x 4-pin header
connector and connects to the audio output connector (J4) on the fax/
modem card.
J9
J9
Pin Signal Name
1 GND
2 MONO_O (to modem chip)
3 GND
4 MONO_I (to sound chip)
KY0061.VSD