Gr New Laptop Keyboard For Logitech K810 Bluetooth Replace The Keyboard To Replace (not A Complete Bluetooth Keyboard) - Replacement Keyboards - AliExpress
Logitech's K810 keyboard pairs with up to three devices, has a button for switching apps in Windows 8 | Engadget
Logitech K810 Illuminated Bluetooth Keyboard 920-004292 B&H