Amazon.com: Logitech 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 SecureConnect C-UAL52 Wireless Mini USB Receiver 831843-0000 | eBay
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LOGITECH C-UAL52 SECURECONNECT WIRELESS MINI USB RECEIVER 831843-0000 I6-2 | eBay
Amazon.com: Logitech 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 Circle View Camera Security System-HomeKit Enabled