Logitech® K270 Wireless Keyboard, USB Unifying Receiver, Black | J & P Supply, Inc.
Zone Wireless Plus Unifying + Audio Receiver
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
Logitech Unifying Vs Non-Unifying Receiver (software in description) - YouTube
Logitech MX Anywhere 2S Wireless Mouse Unifying Receiver with Easy Switch™ Technology 4000DPI for Windows Mac OS iPad OS|Mice| - AliExpress
Logitech M510 Wireless Computer Mouse – Comfortable Shape with USB Unifying Receiver, | Oriental Trading
Replacement Unifying Receiver for Logitech Wireless Mouse M217 Ku | eBay
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
Marcus Mengs on Twitter: "Logitech Unifying receiver fake. Bought 3 cheap Unifying CU0008 receivers (TI chip). Turner out, they all are CU0007 (Nordic) with wrong label and ALL HAVE THE SAME S/N
Logitech's USB Unifying Receiver: one dongle to serve multiple input peripherals | Engadget
Logitech USB Unifying Receiver Dongle for Mouse & Keyboard 910-005235 | eBay