Dell OptiPlex GX620 - Manual (Page 149)

System Board Components
Jumper Settings
The jumper locations are shown below.
1 drive release latch 4 hard drive
2 CD/DVD drive 5 system board
3 power supply and fan 6 heat sink and blower assembly
1 fan connector (FAN) 10 intrusion switch connector (INTRUDER)
2 processor connector (CPU) 11 password jumper (PSWD)
3 power connector (12VPOWER) 12 battery socket (BATT)
4 memory module connectors (DIMM_1, DIMM_2, DIMM_3, DIMM_4) 13 PCI Express x16 connector (SLOT1)
5 serial ATA drive connector (SATA0,) 14 PCI connector (SLOT2)
6 front-panel connector (FNT_PANEL) 15 serial connector (SER2)
7 power connector (POWER) 16 standby power indicator (AUX_PWR)
8 CD/DVD drive connector (IDE) 17 system board speaker (BEEP)
9 RTC reset jumper (RTCRST) 18 internal speaker (INT_SPKR)
Small Form Factor Computer