Device Manager is a software tool that enables system administrators to manage and monitor the devices connected to a computer or a network. It provides a central interface to manage devices, including hardware components, peripherals, and network devices, making it easier to maintain an up-to-date inventory of all devices on the network.

One of the key features of Device Manager is its ability to detect and diagnose device issues. It can identify hardware and driver problems and provide guidance on how to resolve them, helping to reduce downtime and improve system performance. Additionally, Device Manager provides real-time monitoring capabilities, allowing administrators to track device usage and performance metrics, such as disk space usage, network bandwidth, and CPU usage.