Dell Latitude 9510 Setup and specifications guide - Page 28

Table 23. System Configuration(continued) Option Thunderbolt™ Auto Switch USB PowerShare Audio Keyboard Illumination Keyboard Backlight Timeout on AC Keyboard Backlight Timeout on Battery 28 System setup Description This option configures the method used by the Thunderbolt controller to perform PCIe device enumeration. • Auto Switch : The BIOS will automatically switch between BIOS Assist and Native Thunderbolt PC device enumeration modes to get all benefits of the installed OS • Native Enumeration: The BIOS will program the Thunderbolt controller to Native mode ( Auto Switching is disabled) • BIOS Assist Enumeration: The BIOS will program the Thunderbolt controller to BIOS Assist mode ( Auto Switching is disabled) NOTE: A reboot is required for these changes to take effect. This option enables/disables the USB PowerShare feature behavior. This option is disabled by default. Allows you to enable or disable the integrated audio controller. By default, the Enable Audio option is selected. The options are: • Enable Microphone • Enable Internal Speaker This option is set by default. This field lets you choose the operating mode of the keyboard illumination feature. • Disabled: The Keyboard illumination will always be off or 0%. • Dim: Enable the keyboard illumination feature at 50% brightness. • Bright: Enable the keyboard illumination feature at 100% brightness level. This feature defines the timeout value for the keyboard backlight when an AC adapter is plugged into the system. Options are: • 5 seconds • 10 seconds (Default) • 15 seconds • 30 seconds • 1 minute • 5 minutes • 15 minutes • Never This feature defines the timeout value for the keyboard backlight when the system is running only on battery power. Options are: • 5 seconds • 10 seconds(Default) • 15 seconds • 30 seconds