Best Buy: Logitech USB Unifying Receiver 910-005235
OOKWE NEW for Logitech Unifying USB Wireless Receiver USB Dongle Secure 6 Multi-Device 100% Original - Walmart.com
Logitech USB Unifying Receiver - Micro Center
Amazon.com: Logitech M720 Triathalon Multi-Device Wireless Mouse – Easily Move Text, Images and Files Between 3 Windows and Apple Mac Computers Paired with Bluetooth or USB, Hyper-Fast Scrolling, Black : Electronics
How to connect multiple devices to a Logitech unifying receiver - Quora
100% Original Logitech Logi Bolt USB Wireless Receiver Dongle Secure Multi- Device With Packaging
Logi Bolt USB Receiver for Multi-Computer / Device Use
wake up - Using 2 Logitech unifying receivers lists 2 keyboards and mice in device manager - Super User