Dell Precision 5820 Tower Owner's Manual page 68

c. Disconnect the following cables from the system board connectors:
● audio cable [1]
● power cable [2]
● cable holder [3]
● power control cable [4]
● 24 Pin power cable [5]
● front I/O panel [6]
d. Disconnect the following cables:
● SATA cables and ODD cables [1]
● USB 3.1 cable [2]
● Front system fan cable
● Flex0 and Flex1 hard drive data cable
NOTE: Do not pull the connector by the cable wires . Instead, disconnect the cable by pulling on the connector end.
Pulling on the cable wires may loosen them from the connector.
68 Removing and installing components