
I bought it over a year ago and I was used to the backlit keyboard on my previous Dell, where you could turn it on, and change it to different levels of brightness.

I have had my Inspiron 5558 signature edition. RELATED: How to adjust keyboard brightness on MacBook Air M1 NOTE: While pressing Fn or Alt, hit the F10 key 3 times to toggle between off, medium lit, and fully lit. Update: Thanks to the comments, below are the other hotkeys that you can try depending on your Dell laptop model. Studio Laptop with backlit keyboard have an additional icon for the LED on/off switch, which is located on the right arrow key. Note: This only works if you have purchased the optional backlit keyboard while ordering.

The lighting modes are full keyboard, half keyboard, and off. With the same hotkey, you can toggle between the three lighting states (in the given order). You can see all symbols illuminating on the keys. To Turn On Backlit Keyboard in Dell laptops like Studio/Vostro/XPS/Latitude, “ Hold the Fn key and press the Right Arrow key”. Instead, you need to manually enable the backlit keyboard if you have it on your device. But unlike Apple MacBook Pro, there is no sensor that can automatically turn on the backlit keyboard in dim light. DELL offers a backlit keyboard in its Laptop/Notebook which is an optional feature.
