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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Keychron K4 Wireless Bluetooth/USB Wired Gaming Mechanical Keyboard, Compact 100 Keys RGB LED Backlit Gateron Brown Switch N-Key Rollover, Aluminum Frame for Mac Windows, Version 2

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

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Description

⌨️ Elevate your desk game with the Keychron K4 — where compact meets commanding.

VIBRANT RGB AMBIANCE - Customize your workspace vibe with 15+ dynamic backlight modes that enhance focus and style in any lighting.
ALL DAY ENDURANCE BATTERY - Massive 4000mAh battery supports up to 72 hours of continuous typing or a full workweek on a single charge.
COMPACT POWERHOUSE LAYOUT - 96% 100-key design with integrated numpad maximizes desk space without sacrificing productivity.
SEAMLESS MULTI DEVICE MASTERY - Switch effortlessly between 3 Bluetooth devices or USB-C wired connection for ultimate workflow fluidity.
TACTILE BROWN SWITCH EXCELLENCE - Durable Gateron Brown switches rated for 50M keystrokes deliver satisfying, quiet feedback perfect for work and play.

The Keychron K4 Version 2 is a premium 96% wireless mechanical keyboard featuring 100 keys with a numpad in a compact aluminum frame. It supports multi-device Bluetooth pairing (up to 3 devices) and USB-C wired connection, powered by a robust 4000mAh battery offering up to 72 hours of typing time. Equipped with durable Gateron Brown switches rated for 50 million keystrokes and vibrant RGB backlighting with over 15 modes, it’s designed for professionals seeking a tactile, versatile, and stylish keyboard compatible with both Mac and Windows.

Specifications

ASIN	B08LYMDYV9
Additional Features	Bluetooth, Lighting, Wireless
Antenna Location	Gaming, Office
Best Sellers Rank	#5,704 in Video Games ( See Top 100 in Video Games ) #181 in Mac Accessories #446 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 (697)
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 Kilograms
Keyboard Backlighting Color Support	RGB
Keyboard Description	Mechanical
Keyboard Layout	QWERTY
Manufacturer	Keychron
Mfr Part Number	K4C3
Model Name	K4
Model Number	K4C3
Number of Batteries Required	1
Number of Keys	99
Number of Sections	2
Power Source	Battery Powered
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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