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 Large Print Backlit Keyboard, Quiet USB Wired Computer Keyboard, Full Size with White Illuminated LED, Compatible for Windows Desktop, Laptop, PC, Gaming, Black

Product ID: 433336900

Details

Brand
KOPJIPPOM
Colour
Black
Compatible devices
PC
Connectivity technology
USB
Keyboard backlighting colour support
Single Color
Keyboard description
Gaming

💡Adjustable white LED backlight

💧Spill-resistant design

🔠4X larger print for easy visibility

E£ 8548

Duties & taxes included

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Sold byAmazon EGYPTDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔠 Light up your typing game with clarity and comfort!

SEE EVERY KEY CLEARLY - 4X larger fonts reduce eye strain and boost typing accuracy—perfect for professionals and vision-conscious users.
PLUG PLAY SIMPLICITY - USB wired connection ensures hassle-free setup—no drivers, no batteries, just instant productivity across Windows and Mac.
ILLUMINATE YOUR WORKFLOW - Customizable white LED backlight with 3 brightness levels and breathing mode for stylish, glare-free typing anytime.
BUILT TO LAST SPILL PROOF - Durable membrane keys withstand over 5 million presses and resist accidental spills—because your workflow shouldn’t stop.
ERGONOMIC COMFORT FOR LONG HOURS - Full-size 104-key layout with adjustable feet to minimize hand fatigue during marathon work or gaming sessions.

The KOPJIPPOM Large Print Backlit Keyboard combines 4X larger key fonts with adjustable white LED backlighting to enhance visibility and reduce eye strain. Designed for full-size comfort with a 104-key layout and ergonomic feet, it supports plug-and-play USB connectivity compatible with Windows and Mac systems. Its spill-resistant membrane keys ensure durability for over 5 million keystrokes, making it an ideal choice for professionals seeking reliable, stylish, and accessible typing solutions.

Specifications

ASIN	B09LH4KF5H
Antenna Location	Office
Best Sellers Rank	41,259 in PC & Video Games ( See Top 100 in PC & Video Games ) 2,989 in Keyboards (Computers & Accessories) 8,422 in PC Consoles, Games & Accessories
Box Contents	USB Cable
Brand Name	KOPJIPPOM
Button Quantity	104
Colour	Black
Compatible Devices	PC
Compatible Operating System Family	MacOS, Windows
Compatible Tablet Computer Models	Samsung Galaxy Tab S7 FE 12.4"
Connectivity Technology	USB
Customer Reviews	4.5 4.5 out of 5 stars (3,545)
Enclosure Material	Acrylonitrile Butadiene Styrene
Hand Orientation	Ambidextrous
Item Dimensions L x W x H	45L x 16W x 2.5H centimetres
Item Weight	690 Grams
Keyboard Backlighting Color Support	Single Color
Keyboard Description	Gaming
Keyboard Layout	QWERTY
Manufacturer	KOPJIPPOM
Minimum Required Operating System Version	Windows 10, Windows 2000 Professional, Windows 7, Windows 8, Windows 8.1, Windows Vista, Windows XP
Number of Items	1
Number of Keys	104
Number of Packs	1
Number of Sections	2
Power Source	USB
Product Features	Backlit
Style Name	Classic
Switch Type	Membrane
Theme	Office
Unit Count	1.0 count
Water Resistance Level	Waterproof

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