The OEM Ergonomic Wireless Mouse MMMEM550GPS features a patented vertical grip that maintains your hand and wrist at a neutral angle, functioning as a standard optical mouse. This design is clinically proven to reduce muscle strain and discomfort associated with carpal tunnel syndrome and repetitive stress injuries. Recognized with an Ease-of-Use Commendation from the Arthritis Foundation, this mouse is user-friendly. Simply grip the handle and rest your hand on the base, using your thumb for left and right clicks. With USB Plug and Play capability, setup is straightforward.