Logitech Unifying Receiver for Connecting Multiple Devices
Amazon.com: Logitech USB 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
Amazon.com: Logitech New Unifying USB Receiver for Mouse Keyboard M515 M570 M600 N305 MK330 MK520 MK710 MK605 : Electronics
Logitech K360 Compact Wireless Keyboard for Windows, 2.4GHz Wireless, USB Unifying Receiver, 12 F-Keys, 3-Year Battery Life, Compatible with PC, Laptop, QWERTY UK English Layout - Black : Amazon.co.uk: Computers & Accessories
Logitech Unifying receiver for mouse and keyboard - Walmart.com
Buy Logitech Unify MX Keys for Mac Keyboard (920-009554)
Logitech Wireless Keyboard K360 With Unifying Receiver for sale online | eBay