If you are a Windows user, please find the appropriate key caps In the box, then follow the Instructions below to find and replace the following key caps. 4. Connect Bluetooth Switch toggle to Bluetooth Press fn1 + Q (for 4 seconds) and pair with device named Synchrony Ké ® Synchrony K6 A Sleek, Compact Wireless Mechanical Keyboard 2 rE A tactile mechanical keyboard for peak productivity 2 Connect Cable Switch toggle to Cable Switch to wired mode after connected the cable to your keyboard.