Why you should really, really update your Logitech wireless dongle - The Verge
Logitech K270 Wireless Keyboard with Unifying Receiver
Logitech Unifying Receiver for Connecting Multiple Devices
What Is A Logitech Unifying Receiver And How Can You Benefit From It?
How do I pair my Logitech mouse and keyboard to the Zone Wireless Plus receiver with the Tune application? – Logitech B2B Support
How to Connect a Logitech Wireless Mouse to a Unifying Receiver
Logitech partners with iFixit for self repairs | Official spare parts, batteries, and repair guides for select Logitech hardware will be available through iFixit starting 'this summer.' : r/technology
Replacing Your Wireless Mouse / Keyboard Receiver - ComeauSoftware.com
Amazon.com: Logitech USB Unifying Receiver - 2 Pack : Electronics