is there rgb and if there is can you turn it off?

Answer is only true for the "Carbon" color case with the orange keys - the "Classic" (white case and white keys with blue underlighting shown in the image) uses Fn+Delete to turn the lighting on and off. Of the two versions sold by Amazon on this page, neither has RGB lighting.

The keyboard when charging, the indicator stays red only. How can I tell its charging or fully charging?

The indecator light will turn red when fully charged.

if I don't want to use bluetooth, can I disable the transmitter and use usb-c only?

Yes! Just keep the dongle in the board, flip the switch to “G” to ensure Bluetooth is not on, and plug the cable in!

How to reset backlit mode? For some unknown reason the left side is only portion lit.

You can try to long press FN+ESC, and then press FN+\| or download the software to set the backlit mode. If failed, plz contact us via Amazon massage, we will help you!

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Description

⌨️ Elevate your desk game with the RK100 – where style meets unstoppable performance!

COMPACT POWERHOUSE - 96% full-size layout with 100 keys for ultimate space efficiency without compromise.
BUILT FOR ENDURANCE - Massive 3750mAh battery paired with 3 USB ports keeps you powered and connected through marathon sessions.
HOT SWAPPABLE FREEDOM - Easily swap MX-compatible mechanical switches (3/5-pin) to tailor tactile feedback on the fly.
VIBRANT PERSONALIZATION - 18 RGB + 8 monochrome backlight modes fully customizable via intuitive software to match your vibe.
SEAMLESS MULTI DEVICE SYNC - Connect up to 3 devices simultaneously via Bluetooth 5.1, 2.4Ghz wireless, or wired USB-C for uninterrupted workflow.

The RK ROYAL KLUDGE RK100 is a versatile 96% full-size wireless mechanical keyboard featuring tri-mode connectivity (Bluetooth 5.1, 2.4Ghz wireless, and wired USB-C), hot-swappable MX-compatible switches, and a robust 3750mAh battery. With 27 customizable RGB lighting modes and 3 USB pass-through ports, it’s designed for professionals and gamers seeking a compact, durable, and highly personalized typing experience across Windows and Mac platforms.

Specifications

Brand	RK ROYAL KLUDGE
Manufacturer	RK ROYAL KLUDGE
Model	RK100
Product Dimensions	36.83 x 10.41 x 4.06 cm; 1.14 kg
Batteries	1 Lithium Ion batteries required. (included)
Item model number	RK100
Operating System	Mac,Windows
Hardware Platform	Laptop, PC
Hardware Interface	Bluetooth
Compatible Devices	Gaming Console/Laptop/PC/Tablet/Smartphone
Special Features	3 USB Ports, Backlit, Full Size, Tri-mode
Mounting Hardware	USB Cable
Number of items	1
Power Source	Battery Powered
Batteries Included	Yes
Batteries Required	Yes
Battery cell composition	Lithium
Keyboard Description	Tri-mode Mechanical Gaming Keyboard
Connector Type	Bluetooth
Material	Acrylonitrile Butadiene Styrene
Hand Orientation	Ambidextrous
Manufacturer	RK ROYAL KLUDGE
Item Weight	1 kg 140 g

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RK ROYAL KLUDGE RK100 Wireless Mechanical Keyboard RGB Backlit Bluetooth5.1/2.4G/Wired 96% Full Size 100-Key Hot Swappable Gaming Keyboard Brown Switch Carbon

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