Best Buy: Logitech USB Unifying Receiver 910-005235
I've got a brand new Logitech M331 mouse. When I opened it, the USB receiver wasn't given. How can I connect my mouse to my computer? - Quora
Logitech C-BA4-KBD 830407-0000 USB Cordless Mouse Receiver ONLY
Logitech Mouse - Pairing with Original Non-Unifying Receiver - YouTube
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