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 workspace with the RK100: where style meets unstoppable performance!

COMPACT POWERHOUSE - 96% full-size layout with 100 keys balances space-saving design and full functionality for pros on the go.
POWER PORTS GALORE - 3750mAh battery plus 2 USB 2.0 pass-through ports and 1 Type-C port keep your setup charged and connected all day.
SWITCH IT UP ANYTIME - Hot-swappable switches compatible with all MX-style options empower you to tailor tactile feedback without buying a new keyboard.
VIBRANT PERSONALIZATION - 18 RGB modes plus customizable software let you own your desk’s vibe and stand out in any Zoom call.
SEAMLESS MULTI DEVICE SYNC - Connect up to 3 devices via Bluetooth 5.1 or switch instantly to 2.4Ghz wireless or wired USB-C for zero lag.

The RK ROYAL KLUDGE RK100 is a versatile 96% full-size wireless mechanical keyboard featuring tri-mode connectivity (Bluetooth 5.1, 2.4Ghz, wired USB-C), hot-swappable MX-compatible switches, and a robust 3750mAh battery. With 18 RGB backlight modes and multi-device pairing, it’s designed for gamers and professionals seeking customizable, reliable, and stylish input.

Specifications

Brand	RK ROYAL KLUDGE
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
Manufacturer	RK ROYAL KLUDGE
Series	RK100
Color	Classic
Number of USB 2.0 Ports	2
Power Source	Battery Powered
Hardware Platform	Laptop, PC
Operating System	Windows 10
Are Batteries Included	Yes
Lithium Battery Energy Content	3.7 Watt Hours
Lithium Battery Packaging	Batteries contained in equipment
Lithium Battery Weight	0.4 g
Number Of Lithium Ion Cells	2
Number of Lithium Metal Cells	1
Item Weight	1.14 Kilograms

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