Dell OptiPlex 5055 Small Form Factor Owner's Manual page 5

DDR4................................................................................................................................................................................. 49
DDR4 Details...............................................................................................................................................................49
Memory Errors........................................................................................................................................................... 50
Active State Power Management................................................................................................................................. 50
5 System setup............................................................................................................................................... 51
Boot menu......................................................................................................................................................................... 51
System Setup options...................................................................................................................................................... 51
Updating the BIOS in Windows .....................................................................................................................................57
Updating BIOS on systems with BitLocker enabled.............................................................................................. 58
Updating your system BIOS using a USB flash drive............................................................................................ 58
Updating the Dell BIOS in Linux and Ubuntu environments....................................................................................... 58
Flashing the BIOS from the F12 One-Time boot menu............................................................................................... 59
Specifications................................................................................................................................................................... 62
6 Troubleshooting........................................................................................................................................... 67
Diagnostic and Power LED codes.................................................................................................................................. 67
Enhanced Pre-Boot System Assessment - ePSA diagnostics.................................................................................71
7 Getting help................................................................................................................................................. 72
Contacting Dell................................................................................................................................................................. 72
Contents 5