Amazon.com: Logitech Unifying Receiver, 2.4 GHz Wireless Technology, USB Plug Compatible with all Logitech Unifying Devices like Wireless Mouse and Keyboard, PC / Mac / Laptop - Black : Electronics
Logitech K400 Plus Touchpad Wireless Keyboard Black - Usb Wireless Connectivity - On/off Power Switch - 2.40 Ghz Operating Frequency : Target
Mirco Dongle Receiver Usb For Logitech Unifying Keyboard K400r K400plus - Used - Laptop Docking Stations - AliExpress
Logitech K400r Wireless Touch Keyboard Built-in TouchPad With USB Receiver | eBay
Amazon.com: Logitech Unifying Receiver, 2.4 GHz Wireless Technology, USB Plug Compatible with all Logitech Unifying Devices like Wireless Mouse and Keyboard, PC / Mac / Laptop - Black : Electronics
Logitech K400 Usb Unifying Receiver - Wireless Dongle Receiver Usb Adapter 6 M905 - Aliexpress
Logitech Wireless K400R 79 Key Slim Keyboard with Touchpad & USB Receiver | eBay
Logitech K400R Wireless Touch Keyboard Built-In Touchpad w USB Receiver 97855074928 | eBay
Logitech K400 Plus Touchpad Keyboard for TV connected PC
Logitech K400 Plus Touchpad Keyboard for TV connected PC