Reference Guide

BIOS Settings Name Description Supported
Operating
System(s)
property actually toggles the multi-core capability on and off,
rather than hyperthreading.
Possible values are:
• Enable
• Disable
Primary Battery Charge Configuration
Configures the primary battery charging.
Possible values are:
• 1 = Standard Charge — Charges the battery over a long
period of time
• 2 = Express Charge — Switches the primary battery to
Express Charge mode using the express charging algorithm
• 3 = AC Use — Recommended setting for users who
primarily operate the battery when it is plugged in
• 4 = Auto Charge — The battery places itself in a mode
based on periodic evaluation of customer usage to deliver
the best balance of capacity
• 5 = Custom Charge — The battery starts and stops
charging based on the user input
Microsoft Windows,
Linux
Primary Battery Custom Charge Limit
Charges the battery based on the user input.
Possible values are:
• 1 = Primary Battery Custom Charge Start Limit — Is
applicable to the DCIM_BIOSService for setting the start
limit for charging the battery.
• 2 = Primary Battery Custom Charge Stop Limit — Is
applicable to the DCIM_BIOSService for setting the stop
limit for charging the battery.
Possible values for the Start and Stop limit are:
• Start limit = 50 — 95
• Stop limit = 55 — 100
• Granularity — Dead band in binary format. For example, if
the dead band is 5%, the
stop charging value is 5% greater
than the start charging value, but is not allowed to exceed
100.
Microsoft Windows
Primary Battery Custom Charge Start
Limit
Sets the start limit for charging the battery.
Possible values are:
• Integers ranging from 50 to 95
Linux
Primary Battery Custom Charge Stop
Limit
Sets the stop limit for charging the battery.
Possible values are:
• Integers ranging from 55 to 100
Linux
Primary IDE Channel, Master Device
Enables or Disables primary Parallel ATA master channel.
Possible values are:
• Off
• Auto
Microsoft Windows
Primary IDE Channel, Slave Device
Enables or disables primary Parallel ATA slave channel.
Possible values are:
Microsoft Windows
280 BIOS settings supported in Dell Command | Monitor 10.2.1