Dell OptiPlex 755 User Manual page 37

7 front-panel connector (FRONTPANEL)
8 power connector (POWER)
9 external SATA connector (eSATA)
10 internal USB (INT_USB)
11 RTC reset jumper (RTCRST)
Back to Contents Page
18 serial connector (SERIAL2)
19 system board speaker (BEEP)
20 aux power LED (aux_LED)
21 floppy connector (DSKT)
22 fan connector (FAN_CPU)