Do you mean "Daryo-herdsman mechanical keyboard"?

the backlight adjustment method is as follows:

FN key+scrlllock key in the lower left corner: adjust the backlight brightness.

FN key +Pause break key in the lower left corner: adjust the backlight color.

Extended information:

Mechanical Keyboard is a type of keyboard.

structurally, each key of the mechanical keyboard has a separate switch to control the closing, which is also called "axis". According to the classification of microswitches, the mechanical keyboard can be divided into tea axis, green axis, white axis, black axis and red axis.

it is precisely because each key is composed of an independent micro-motion, so the key has a strong sense of paragraph, which produces a special feel suitable for game entertainment, so it is usually used as an expensive high-end game peripheral.

References:

Baidu Encyclopedia of Mechanical Keyboard