Dell OptiPlex 740 Guide De Référence Rapide page 46

7 front-panel connector
(FRONTPANEL)
10 battery socket
(BATTERY)
13 standby power
(AUX_PWR_LED)
16 password jumper
(PSWD)
19 optional DVI-card
connector
(DVI_HDR)
Jumper Settings
Desktop Computer
46
Quick Reference Guide
8 intrusion switch
connector
(INTRUDER)
11 internal USB
(USB1)
14 PCI connectors
(SLOT2, SLOT3)
17 floppy drive
connector (DSKT)
20 fan connector
(FAN_CPU)
9 CMOS reset jumper
(RTCRST)
12 PCI Express x16
connector (SLOT1)
15 PCI Express
x1connector (SLOT4)
18 serial connector
(PS2/SER2)