Dell Precision 5820 Tower Owner's Manual page 87

Plugging the power management cable into the Clear CMOS jumper will cause the BIOS to reset when sending a remote restart
request to the Teradici card. You will then have to reset the time and BIOS settings.
If the power management cable from the Teradici card is plugged into the Clear PSWD jumper, then the BIOS password will be
cleared and a new one will need to be configured.
Technology and components 87