Amazon.com: GK21S RGB Hot Swap Independent Driver Wired …

When plugging switches,please put the switch 90 degree above the PCB.When there is some resistance,don’t plug it in forcely and check whether your switch pin is bent. Details The Aluminum case is CNC anodized and sand blast. This pcb is fully programmable. The chipset is MCU 32 bit,3 pcs 256*256*256 RGB drive to support full 16.8 million RGB.

https://www.amazon.com/Independent-Driver-Bluetooth-Tyce-C-Numpad/dp/B086ZGX8GQ