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A Look At USB Devices with USB Prober

The USB Prober application, which is part of the Mac OS USB Device Driver Kit, is a utility for examining devices on the USB. Figure 2-3 is a screen capture taken from the USB Prober application. The example shows the various descriptors that define a USB keyboard class device. You can see that the keyboard is a composite class device, that has a HID interface with a keyboard protocol, and has a single endpoint that supports the interrupt transfer type.

Additional details about how to access the information that defines a USB device can be found in USB Services Library Reference

Figure 2-3 USB Prober view of a USB device

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