Dell OptiPlex 745 Guide De Référence Rapide page 40

1 internal speaker connector (INT_SPKR)
2 processor connector (CPU)
3 processor power connector (12VPOWER)
4 memory module connectors (DIMM_1,
DIMM_2, DIMM_3, DIMM_4)
5 RTC reset jumper (RTCRST)
6 password jumper (PSWD)
7 SATA connectors (SATA0, SATA1)
8 front-panel connector (FNT_PANEL)
9 power connector (POWER)
10 fan connector (FAN2)
Jumper Settings
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Quick Reference Guide
11 intrusion switch connector (INTRUDER)
12 internal USB connector (USB)
13 battery socket (BATT)
14 PCI Express x16 connector (SLOT1)
15 PCI connector (SLOT2)
16 serial connector (SER2)
17 floppy drive connector (DSKT)
18 flea power
19 system board speaker (BEEP
20 fan connector (FAN)