NANO RECEIVER for USB Receiver for Logitech M905 M600 M525 M950 M705 M545 Mouse | eBay
Amazon.com: Logitech M545 Wireless Mouse – Side-to-Side Scroll Wheel and 2-Thumb Buttons Make Computer and Laptop Navigation Effortless, Ergonomic Shape for Right/Left Hand Use, USB Unifying Receiver, Black : Electronics