Razer HDK does turn off while the computer is sleeping

Hello!! My Razer HDK is connected to the computer via USB to the motherboard (Asus Z370-H Gaming) and via the power adapter to the outlet (for brighter backlighting). My problem: rgb backlight does not turn off when the computer is in sleep mode. However, mouse (Razer lancehead) and mouse pad (Razer firefly) works properly! BUT: when I unplug the power adapter and then try to put the computer into sleep mode again, the backlight turns off and all ok! The problem has already been observed for two days. It's strange that after I threw out the UPS. What can be done, please, tell me?