Note: Please download the keyboards configuration software according to the URL on the manual After opening the software when you need to use the Key Mapper / Custom Macro / Quick Macro / Options function you need to click the Connect in the top-left to connect the keypad. Once set up you need to click the Upload to save. Otherwise all settings are invalid. It is recommended to use Key action tracking which is the key action tracking function. After checking Key action tracking press any key on the keyboard or turn the knob the software will mark the position of this key in the software which is convenient for direct comparison. Normal / FN / FN2 /FN3 4-Layer Configuration You can set up Normal / FN / FN2 / FN3 4-layer configuration. Once set up the 45-keys keypad will be converted into more keypad. You need to set a shortcut key of the FN layer in the Normal layer When you need to enter a key on the FN layer you need to press and hold the FN key on the normal layer and then press the key of the FN layer that you want to enter. Custom Advanced Macro You can set up 12 advanced macros (with time delay) and 12 quick macros (without time delay). Each macro can record up to 42 characters. A total of 24 macros can be cascaded or cycled. The user can define a key as a specified macro and automatically trigger the macro by simply triggering the key. When using a loop macro press the key to trigger and press again to stop Specifications: Keyboard Interface: USB Type-C Rating: DC 5V