Dell Latitude 5420 Rugged Setup and Specifications

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Hot key definition

Fn behavior: Primary behavior is media key; Secondary behavior is F1-F12 key.

Fn Lock only switches primary and secondary behavior on F1-F12.
F7 is stealth –unique for rugged and semi rugged platforms. It turns off LCD, all wireless, all alerts, indicator lights, sound, fan, etc

Table 1. Keyboard shortcutsKeyboard shortcuts
Hot keys	Function	Description
Fn+ESC	Fn Lock	Allows the user to toggle between locked and unlocked Fn keys.
Fn+F1	Audio Volume Mute	Temporarily mutes/unmutes the audio. The audio level before muting is returned after unmuting.
Fn+F2	Audio Volume Down/Decrease	Decreases the audio volume until minimum/off is reached.
Fn+F3	Audio Volume Up/Increase	Increases the audio volume until maximum is reached.
Fn+F4	Microphone Mute	Silences the on-board microphone so it cannot record audio. There is an LED on the F4 function key that notifies the user of the state of this feature: LED off = microphone capable of recording audio LED on = microphone muted and unable to record audio
Fn+F5	Num lock	Allows the user to toggle between locked and unlocked NumLock
Fn+F6	Scroll lock	Used as Scroll Lock key.
Fn+F7	Stealth Mode	Allows the user to toggle to and from Stealth Mode
Fn+F8	LCD and Projector display	Determines video output to LCD and external Video devices when attached and displays present.
Fn+F9	Search	Mimics the Windows key + F keystroke to open Windows Search dialog box.
Fn+F10	KB Illumination/Backlight	Determines the Keyboard Illumination/Backlight brightness level. The hot key cycles through the following brightness states when pressed: Disabled, Dim, Bright. For more detail, see Keyboard Illumination/Backlight section.
Fn+F11	Brightness Decrease	Decreases the stepping of LCD brightness for each press until minimum is reached. For details, see the LCD Brightness section.
Fn+F12	Brightness Increase	Increases the stepping of LCD brightness for each press until maximum is reached. For details, see the LCD Brightness section.
Fn+PrintScreen	Radio On/Off	Toggles all the wireless radios on and off. For example, WLAN, WWAN, and Bluetooth.
Fn+Insert	Sleep	Puts the system into the ACPI S3 State and does not wake the system.

Traditional programming functions like Scroll Lock are assigned to alpha keys with un-printed legends.

Fn+S = Scroll Lock
Fn+B = Pause
Fn+Ctrl+B = Break
Fn+R = Sys-Req

NOTE: For non-backlit keyboards F10 has no function and icon on function key is purged.