USBDeview is a free, portable USB diagnostics utility from NirSoft that lets you view and manage every USB device that has ever connected to your Windows system - currently connected or not. It displays detailed information including device names, serial numbers, Vendor and Product IDs, device type, drive letter, connection status, and exact timestamps for first and last connection. Whether you are troubleshooting a USB problem, auditing device usage, or cleaning up leftover registry entries, it is one of the most capable free tools available for the job.
Quick answer: Download USBDeview, extract the ZIP, and run USBDeview.exe - no installation required. The tool immediately displays every USB device connected to the system, past and present. Right-click any entry to disable, uninstall, run a speed test, or export device details. The current version is 3.10.