USBSpy

If you want to monitor the exchange of information between your computer and any USB device, then you should give this application a try. USBSpy is a small but powerful application that allows you to keep an eye on the information that is transferred between any USB device and your computer. USBSpy allows you to capture, record and analyze the flow of information. This application will also be specially useful as a debugging tool, or for testing drivers and new hardware that is connected over USB.

USBSpy provides deep analysis of the traffic, and will provide time stamps, filters, and triggering options. With this application you can get an insight look at the configuration, setup, data requests and power management of USB devices. It also includes tools for easily debugging application that work with USB connections, as well as analyzing the performance of the firmware and testing protocols.