Original Logitech Unifying receiver C-u0008 used – Smart IT Shopper
Amazon.com: USB Dongle Mouse Receiver Adapter Replacement for Logitech G PRO X Superlight Wireless Mouse
Amazon.com: Logitech C-U0007 Unifying Receiver for Mouse and Keyboard Works with Any Logitech Product That Display The Unifying Logo (Orange Star, Connects up to 6 Devices) (C-U0007)