Logitech Unifying Receiver for Connecting Multiple Devices
Logitech Craft review: A slick keyboard combo that takes on the Surface Dial | Ars Technica
Logitech MK710 Desktop Wireless Mouse and Keyboard Combo
Amazon.com: Logitech C-U0007 Unifying Receiver for Mouse and Keyboard Works with Any Logitech Product That Display The Unifying Logo (Orange Star, Connects up to 6 Devices) (C-U0007) : Electronics
Logitech K520 Wireless Keyboard With Unifying Receiver Dongle! | eBay
Logitech® K270 Wireless Keyboard, USB Unifying Receiver, Black - WB Mason
Logitech Mk540 Wireless Keyboard Mouse Combos With Unifying Usb Receiver Mice Keys Set For Pc Laptop Office Business Game - Keyboard Mouse Combos - AliExpress