Dell OptiPlex GX620 - Manual (Page 109)

System Board Components
Jumper Settings
The jumper locations are shown below.
4 system board
1 fan connector (FAN) 12 password jumper (PSWD)
2 processor connector (CPU) 13 battery socket (BATT)
3 power connector (12VPOWER) 14 PCI Express x16 connector (SLOT1)
4 memory module connectors (DIMM_1, DIMM_2, DIMM_3, DIMM_4) 15 PCI connector (SLOT3)
5 serial ATA drive connectors (SATA0, SATA2) 16 PCI riser connector (SLOT2)
6 front-panel connector (FNT_PANEL) 17 serial connector (SER2)
7 CD drive analog audio cable connector for optional analog audio cable (CD_IN) 18 floppy drive connector (DSKT)
8 power connector (POWER) 19 standby power indicator (AUX_PWR)
9 CD/DVD drive connector (IDE) 20 system board speaker (BEEP)
10 RTC reset jumper (RTCRST) 21 internal speaker (INT_SPKR)
11 intrusion switch connector (INTRUDER)
Desktop Computer
Jumper Setting Description