Replacing Your Wireless Mouse / Keyboard Receiver - ComeauSoftware.com
USB Mini Receiver for Logitech C UAK42 MX3000 MX3200 LX710 WAVE S510 LX300 EX100 V22 mouse and keyboard|receiver transmitter|usb stereo receiverusb transmitter receiver - AliExpress
Used - Very Good: Logitech LX8 Black/Blue Cordless Laser Mouse - Newegg.com