This is a USB Mouse.

Work more comfortably with the Evoluent VerticalMouse 4 Small VM4S, an ergonomic wired USB mouse designed for right-handed users with smaller hands. Its upright vertical shape encourages a more natural hand position, while the wide bottom lip helps support your hand during extended computer sessions.

Built for everyday office work, browsing, and productivity, this right-hand vertical mouse features six customizable buttons and four pointer-speed settings that you can adjust without changing your grip. Use Evoluent Mouse Manager software to personalize button functions to suit your workflow. Simply connect via USB for reliable wired performance, with compatibility across Windows, Mac OS, and Linux. A practical ergonomic computer mouse for a more comfortable desk setup.