Pressing F12 will not open the Save As window to save a file. For example, if F-Lock is disabled and you are using an Internet browser, pressing F5 will not refresh the page. While F-Lock is enabled, the secondary functions on the F1-F12 keys is not accessible.ĭisabling F-Lock lets you use the secondary functions on the F1-F12 keys and prevent you from accessing the standard functions tied to the F1-F12 keys. Pressing F12 in some programs brings up the Save As window to save a file.
For example, pressing F5 while using an Internet browser refreshes the page.
What is the difference between the F-Lock and Fn keys?Įnabling F-Lock lets you execute any standard functions tied to the F1 through F12 keys. When the F-Lock key is disabled, the indicator light is turned off. When the F-Lock key is enabled, the indicator light is turned on. If a keyboard has a F-Lock key, it usually also has a F-Lock key indicator LED (light-emitting diode). Pressing the F-Lock key again toggles off (disables) the F1-F12 key standard functions, and turns on the ability to use the secondary functions on those keys. Pressing and releasing the F-Lock key toggles on, or enables, the F1-F12 keys to use their standard functions. The F-Lock key is similar to caps lock in that it "forces" F1 through F12 to use their standard functions, as defined by the program being used.
The FnLk, F-Lock key is a toggle key on a PC compatible keyboard used to enable or disable the F1 through F12 keys' secondary functions (hotkeys).