This report provides a comprehensive overview of computer hardware, specifically focusing on the mouse as an essential input device. It begins with an introduction to hardware and its various functions, followed by a detailed examination of the mouse, including its different components and how it functions. The report then delves into the practical usage of a mouse, covering actions such as moving the cursor, opening programs, selecting items, dragging and dropping, hovering, and scrolling. Furthermore, it reviews the specifications of a sample mouse model (M-U0029), including connection types, USB details, DPI settings, report rates, sensor types, button configurations, and onboard memory. The report concludes with recommendations for usage, comparing wired and wireless mice and considering factors such as cost, battery life, and aesthetics. The report emphasizes the importance of the mouse as a vital tool for various computer tasks and provides a comparative analysis to aid users in making informed decisions about mouse selection.