Why usb c to usb a? the cable provided has usb c connector at the keyboard end and usb a at the computer end. why not usb c at both ends?

Probably because the rest of the computer industry hasn’t moved completely to usb c. USB A is a highly robust connector going on 24 or so years. The USB C connector though fast has been known to lose how well it holds into the receptacle after awhile. USB A is also still the most common connector thus making it the most compatible.

How can i program the backlights to display my own rgb sequence?

Unfortunately with the Keychron K4 you are unable to program your own colors or pattern. You can select from some preset patterns or a specific color using a key on the keyboard.

"usb accessories disabled" when connecting through an external display. any idea as to how to fix this ?

What's giving you that message? Windows or the display itself? Doesn't sound like windows... If so, Google the message with the model of your display. Probably many other people have had this problem.

Are the switches hot swappable?

No, on this keyboard you can’t hot swap. It’s a good keyboard but it’s not what your looking for if you want to change out keys.

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K4C

Product ID: 268054979

Details

Brand
Keychron
Color
Gateron Brown
Compatible Devices
Laptop
Connectivity Technology
wired wireless
Keyboard Description
Mechanical
Keyboard backlighting color support
RGB

🌈15+ RGB lighting modes

🎮N-key rollover wired mode

🔋72h typing battery life

1172634Fr

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Description

⌨️ Elevate your workflow with the keyboard that keeps pace with your hustle!

VIBRANT RGB AMBIANCE - Customize your workspace with 15+ dynamic backlight modes for style and focus.
COMPACT POWERHOUSE LAYOUT - 96% 100-key design with full numpad—maximize desk space without compromise.
ENDURING TACTILE EXCELLENCE - Gateron Brown switches rated for 50M keystrokes deliver satisfying, quiet feedback.
ALL DAY PRODUCTIVITY BATTERY - 4000mAh battery fuels up to 7 days of normal use or 72 hours of continuous typing.
SEAMLESS MULTI DEVICE MASTERY - Connect up to 3 devices via Bluetooth + USB-C wired for instant switching.

The Keychron K4 Version 2 is a compact 96% wireless mechanical keyboard featuring 100 keys with a numpad, equipped with durable Gateron Brown switches for tactile precision. It supports multi-device Bluetooth connectivity plus USB-C wired mode, boasts a powerful 4000mAh battery lasting up to 7 days, and offers customizable RGB backlighting with over 15 lighting effects. Designed with an aluminum frame and Mac/Windows compatibility, it’s built for professionals seeking a blend of style, performance, and versatility.

Specifications

ASIN	B08LYMDYV9
Additional Features	Bluetooth, Lighting, Wireless
Antenna Location	Gaming, Office
Best Sellers Rank	#11,248 in Video Games ( See Top 100 in Video Games ) #363 in Mac Accessories #780 in PC Gaming Keyboards
Brand	Keychron
Built-In Media	Keycap Puller, USB Cable
Button Quantity	99
Color	Gateron Brown Switch
Compatible Devices	Laptop, Smartphone
Compatible Operating System Family	MacOS, Windows
Connectivity Technology	wired, wireless
Customer Reviews	4.5 4.5 out of 5 stars (707)
Enclosure Material	Aluminum
Generation	2
Hand Orientation	Ambidextrous
Item Dimensions L x W x H	14.8"L x 5.08"W x 1.5"H
Item Weight	0.94 kg
Keyboard Backlighting Color Support	RGB
Keyboard Description	Mechanical
Keyboard Layout	QWERTY
Keyboard Plate Material	Aluminum
Manufacturer	Keychron
Mfr Part Number	K4C3
Model Name	K4
Model Number	K4C3
Number of Batteries Required	1
Number of Items	1
Number of Keys	99
Number of Packs	1
Number of Sections	2
Series Number	4
Style Name	Contemporary
Switch Type	Gateron Brown Switch
Theme	keyboards
Unit Count	1 Count
Warranty Description	1
Water Resistance Level	Not Water Resistant

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1172634Fr

Duties & taxes included

In stock

Sold byAmazon CongoDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Congo.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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