Logitech MX Vertical review: Not the mouse upgrade you're looking for | Mashable
Logitech MX Vertical Review - RTINGS.com
Amazon.com: Logitech MX Vertical Wireless Mouse – Advanced Ergonomic Design Reduces Muscle Strain, Control and Move Content Between 3 Windows and Apple Computers (Bluetooth or USB), Rechargeable, Graphite : Electronics
Logitech MX Vertical Left and Right Mouse Button Microswitch Replacement - iFixit Repair Guide
Amazon.com: Logitech MX Vertical Wireless Mouse – Advanced Ergonomic Design Reduces Muscle Strain, Control and Move Content Between 3 Windows and Apple Computers (Bluetooth or USB), Rechargeable, Graphite : Electronics