USBlyzer is an easy to use software USB protocol analyzer for Windowswhich provides a complete yet simple to understand view for analyzing USB Host Controllers, USB Hubs and USB Devices activity.With USBlyzer you can view detailed information about all USB devices and their child components.USBlyzer allows you to capture, decode and display important information such as URB requests and related structures used by USB drivers, IRP used by PnP subsystem, kernel-mode and user-mode I/O requests used by USB client drivers and user-mode applications.USBlyzer can be successfully used for application, device driver and hardware development and can help you test and troubleshoot software and hardware.USBlyzer is a complete software solution, so you won't have to install any additional hardware or software.You'll find USBlyzer extremely useful for understanding how system-supplied and vendor-supplied USB device drivers communicate with the USB driver stack.

Universal Serial Bus (USB) protocol is very complex. So the USB support software present in Microsoft® Windows® operating system family is also complex and provides a layered architecture where the system-supplied and vendor-supplied user- and kernel-mode components can be involved in communications over USB. Transactions performed over the USB are basically initiated by the user applications which communicate with the operating system by calling Windows API functions which in turn interact with appropriate device drivers providing access to a USB device through standard and vendor-specific interfaces.

What do you do when you want to know what is going on inside the Windows USB subsystem? What USB drivers are used to connect various peripheral USB devices to a computer? What I/O requests, support routines, structures, and interfaces the core components of the Windows USB architecture use to communicate with the USB devices? What you need is a Software USB Protocol Analyzer. USBlyzer is an easy to use Professional Software USB Protocol Analyzer for Windows, which provides a complete yet simple to understand view for monitoring and analyzing USB Host Controllers, USB Hubs and USB Devices activity

USBlyzer is an easy to use software USB protocol analyzer for Windows, which provides a complete yet simple to understand view for monitoring and analyzing USB Host Controllers, USB Hubs and USB Devices activity.

With USBlyzer you can:
* View detailed information about all USB devices and their child components:
- All plugged USB devices in hierarchical auto-refreshed tree view.
- USB device stack layout: Device objects for each driver that is involved in handling I/O activity.
- USB descriptors: Device, Configuration, Interfaces, Endpoints, etc.
- Information related to Plug and Play: Hardware IDs, Instance ID, Software Key, etc.
* Capture, decode and display important information going through USB device stack:
- USB-related requests such as URBs and structures used by USB device drivers.
- I/O Request Packets (IRPs) used by PnP subsystem.
- Kernel-mode and user-mode device I/O control requests (IOCTLs) used by USB client drivers and user-mode applications.
- Incoming and outgoing data traffic of the USB devices.
* Trace and analyze how the user-mode applications and USB device drivers communicate with the USB driver stack.