How to adjust the bightness of the back light?

In the bottom row of keys, there's one to the right of the space bar that has an icon on it that looks like the sun. It's between the Function key (FN) and the Control key (Ctrl). According to the user's manual which came with the keyboard, tapping that key will turn the light on or off. For a "breathing light" (cycle between bright and dim), hold down the FN key and tap the sun icon. Release the FN key, and the light will cycle, from bright to dim to bright to dim etc. - the so-called "breathing light" (I don't use it, as I find it distracting). To simply change the brightness level, hold down the FN key and tap the PU key (Page Up) to brighten the light, or tap PD (Page Down) to dim it. When you have the brightness you want, release the FN key. Works for me ... maybe make a note of it?

what are the dimensions of each key?

Most keys are 5/8" square (16 mm). Judge the large keys from this.

Since seller did not send manual and a reviewer explained fn key, anyone knows what keys ps, sl , pb and pu are for ?

PS - Print Screen SL - Scroll Lock PB - Pause/Break PU - Page Up

does the keyboard light have a time out?

The light is on unless you turn off your computer, put your computer to sleep or there is a key on the keyboard that lets you choose to have the light off.

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KOPJIPPOM Quiet USB Wired Computer Keyboard, Full Size with White Illuminated LED, Compatible for Windows, Mac OS Desktop, Laptop, PC, Gaming

KOPJIPPOM Quiet USB Wired Computer Keyboard, Full Size with White Illuminated LED, Compatible for Windows, Mac OS Desktop, Laptop, PC, Gaming

Product ID: 532471940

Details

Brand
KOPJIPPOM
Compatible Devices
Laptop
Connectivity Technology
Micro USB
Keyboard Description
Gaming
Recommended Uses For Product
Gaming

💡4X larger backlit fonts

🔌4.9 ft wired USB plug & play

⌨️Full-size 104-key ergonomic layout

SAR 368

Duties & taxes included

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Description

💻 Light up your workflow with comfort and clarity!

PLUG PLAY SIMPLICITY - 4.9 ft USB cable ensures fast, driver-free setup—just connect and conquer.
ERGONOMIC FULL SIZE COMFORT - 104-key layout with numeric pad designed for long hours without fatigue.
CUSTOMIZABLE BACKLIGHT CONTROL - Adjust brightness or switch off the backlight to match your environment and mood.
SEE EVERY KEY EVEN IN THE DARK - 4X larger illuminated fonts for effortless visibility and reduced eye strain.
WHISPER QUIET TYPING EXPERIENCE - Membrane switches deliver silent keystrokes, perfect for focused work or late-night gaming.

The KOPJIPPOM Quiet USB Wired Keyboard combines a full-size 104-key ergonomic design with 4X larger white backlit fonts for superior visibility. Featuring a 4.9 ft USB connection, it offers plug-and-play convenience compatible with Windows and Mac OS. Its adjustable backlight and whisper-quiet membrane switches make it ideal for professionals and gamers seeking comfort and precision in any lighting condition.

Specifications

ASIN	B09LH4KF5H
Antenna Location	Gaming
Best Sellers Rank	#186,008 in Computers & Accessories ( See Top 100 in Computers & Accessories ) #1,519 in Keyboards
Box Contents	USB Cable
Brand Name	KOPJIPPOM
Button Quantity	104
Colour	Black
Compatible Devices	Laptop
Compatible Operating System Family	Windows
Connectivity Technology	Micro USB
Country of Origin	USA
Customer Reviews	4.5 4.5 out of 5 stars (3,545)
Enclosure Material	Plastic
Hand Orientation	Ambidextrous
Item Type Name	keyboard
Item Weight Unit of Measure	690 Grams
Keyboard Description	Gaming
Keyboard Layout	QWERTY
Number of Keys	104
Number of Sections	2
Product Features	Backlit, Ergonomic
Style Name	Modern
Switch Type	Membrane

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