We have tested and can confirm that the Slim X1 Bluetooth Keyboard was designed mainly for Apple iOS and macOS devices which is why the function keys have been programmed to suit similar hotkey functions. Although it may pair/connect to your Windows device, keep in mind that not all functions of the keyboard will work with Windows devices.

Be sure to pair the keyboard by locating the Control Panel > Hardware & Sounds > Add A Device, not from the Bluetooth settings: (https://support.satechi.com/hc/en-us/articles/360029447271-Connecting-Your-Bluetooth-Keypad-Keyboard-or-Remote-to-Windows-10-Devices-v1703-and-later-)

Keep in mind, some of the function keys (F1-F12) will not work as they would with an Apple computer/device.