Dell Latitude 5491 Setup And Specifications Manual page 32

Option Description
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Data Wipe This field allows users to erase the data securely from all internal storage devices. The following is list of devices
affected:
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BIOS Recovery This field allows you to recover from certain corrupted BIOS conditions from a recover file on the user primary hard
drive or an external USB key.
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32 System setup options
Allows BIOS Downgrade (enabled by default)
Internal SATA HDD/SSD
Internal M.2 SATA SDD
Internal M.2 PCIe SSD
Internal eMMC
BIOS Recovery from Hard Drive (enabled by default)
BIOS Auto-Recovery