?lithium battery Macro Keyboard with Knob?Knob (turn left and right, press down) can be programmable. Rotate left and right can be infinitely rotated.It can be set to ± the volume, switch the music previous/next song, reduce/increase the light brightness, switch the light mode, webpage forward/back, etc.There is any will not use, please contact us in time !!!! Do not solve it by yourself, the product also has more steps to use !!!!. Software and manual download address:https://sikaicase.com/blogs/support/setting-for-software,Please, then open the exe file, please open the software from within the zip package shows the English software! If you have any questions, please feel free to contact us. RGB backlight can be customized to the player's desired color. The backlight brightness can be adjusted/turned off.When downloading/installing the software, please turn off your computer's antivirus program, or you may not be able to install the software!. ?Programmable Macro keyboard with Storage?The Macro Keyboard has a Storage Function, which Can be Used on Systems that Support USB Protocol such as for Linux, for IOs, etc. After Setting it up on the for Windows System.Note: If you want to use this Macro keyboard on a Mac, you must find a Windows system and set the keys you need before you can use it on a Mac device. You cannot download and use this software on a Mac.set in windows first,then it could work in Mac.Command= Win+,Option=Alt,Control=Ctrl. ?Macro keyboard Programmable with settable keys and knobs?Knobs can also be set with functions such as play previous song, next song, volume up, volume down, pause, play, etc. Change according to your needs. one handed gaming keyboard can be set up with two to three levels of function shortcuts according to your needs. And each layer can be saved and used, switch freely!. ?Download Location ?https://sikaicase.com/blogs/support/setting-for-software(Please download the ''The Newest Software''). ?3 Modes Connection Programmable Macro Keyboard with Knob?Note;please do not receive the 2.4G receiver customers,contact us,we may have missed in the shipment of the installation.We will send you a replacement,thank you!Please contact us!This is a 6 Keys Programmable one handed gaming keyboard with Adjustment Knob, You Could Set the Shortcut Keys to Reduce the Cumbersome Process.3 Modes:2.5G Receiver Wireless, BT Wireless,USB Wired Connection.We recommend using our included 2.4G receiver for more stable use!.