Amazon.com: Logitech Signature K650 Comfort Full-Size Wireless Keyboard with Wrist Rest, BLE Bluetooth or Logi Bolt USB Receiver, Deep-Cushioned Keys, Numpad, Compatible with Most OS/PC/Window/Mac - Graphite : Electronics
User manual Logitech MK850 Performance (English - 148 pages)
Logitech Performance MK850 Unboxing, Review and Setup for 3 Computers - YouTube