Brand new - Logitech Unifying Receiver for keyboard & mouse

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Logitech Comfort Wireless Combo Keyboard & Mouse (Brand New) – Pawn Pro

Logitech USB Unifying Receiver - 2 Pack

Logitech Unifying Software - Download

Wireless Dongle Receiver Unifying USB Adapter For Logiteches Mouse Keyboard For M280 M320 M325 M330 M545 Connect 6 Device - AliExpress

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Logitech K230 Compact Wireless Keyboard for Windows, 2.4GHz Wireless with USB Unifying Receiver, Space-Saving Design, 2-Year Battery Life, PC/Laptop

How to Connect Logitech Wireless Mouse to Unifying Receiver