Logitech Unifying Receiver for Connecting Multiple Devices
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 : Amazon.co.uk: Computers & Accessories
Logitech USB Unifying Receiver : Amazon.co.uk: Computers & Accessories
Logi Bolt Wireless Technology - Secure and High Performance
USB Dongle Mouse Receiver + Extension Port Adapter for Logitech G PRO C-U0008 | eBay
Wireless Gameing Headset USB Receiver Dongle Adapter A-00080 For Logitech PRO X | eBay