windows 7 - Logitech unifying reciever no longer works on ALL USB ports - Super User
Logitech Performance MX Mouse Review | eTeknix
Logitech M705 Marathon Wireless Mouse – Long 3 Year Battery Life Ergonomic Sculpted Right-Hand Shape Hyper-Fast Scrolling and USB Unifying Receiver for Computers and laptops Dark Gray (Discontinued by Manufacturer)