Dell OptiPlex GX620 - Manual (Page 200)

System Board Components
Jumper Settings
The jumper locations are shown below.
1 heat sink assembly 4 hard drive
2 speaker (optional) 5 security cable slot
3 memory modules (2) 6 chassis intrusion switch
1 fan connector (FAN_FRONT) 8 battery
2 internal speaker connector (INT_SPKR) 9 clear CMOS jumper (RTCRST)
3 system board speaker (BEEP) 10 password jumper (PSWD)
4 channel B memory connector (DIMM_2) 11 hard-drive power connector (SATA_PWR)
5 channel A memory connector (DIMM_1) 12 fan connector (FAN_REAR)
6 SATA data cable connector(SATA0) 13 intrusion switch connector (INTRUDER)
7 standby power indicator (AUX_LED) 14 microprocessor heat-sink assembly
Ultra Small Form Factor Computer