USBTrace is a software-only USB Protocol Analyzer for Windows. USBTrace can monitor USB transactions happening at USB host controllers, hubs and devices. USBTrace is a 100% software product. Especially suited for inspecting host side USB protocol. USBTrace supports Windows 2000, Windows XP, Windows 2003 Server, Windows Vista & Windows 7 operating systems (Both 32-bit and 64-bit). Features: 1.