Turn on your MK540 keyboard and mouse. To connect the MK540 mouse and keyboard, plug the provided Unifying receiver into a USB
![help] Looking for a Caps Lock keycap that allows light through from the LED underneath. Like the image but in black, preferably stepped but not essential. : r/MechanicalKeyboards help] Looking for a Caps Lock keycap that allows light through from the LED underneath. Like the image but in black, preferably stepped but not essential. : r/MechanicalKeyboards](https://external-preview.redd.it/Ca_FaQRBxBVMQ2TLEmr-i8Hr7HYdPVs2WVa8llzHpjM.jpg?width=640&crop=smart&auto=webp&s=672ff4ef1d2fe047aaf0bde9c3f6076398883922)
help] Looking for a Caps Lock keycap that allows light through from the LED underneath. Like the image but in black, preferably stepped but not essential. : r/MechanicalKeyboards
![CAPS LOCK,NUM LOCK LED IS MISSING | Caps Lock Num Lock Scroll Lock Indicator| capslock have no light - YouTube CAPS LOCK,NUM LOCK LED IS MISSING | Caps Lock Num Lock Scroll Lock Indicator| capslock have no light - YouTube](https://i.ytimg.com/vi/_YNVm3PHS6c/maxresdefault.jpg)