Tests your device USB Host capability by listing the USB devices attached.

Simply run the app, plug in your USB device(s) and click find.

Copy results to clipboard ready for pasting into other software.

Not all devices have USB Host capability. For USB devices to be detected we need:

Android 3.1 or newer (USB Host API support)
Device that has USB hardware.
Compatible Kernel that links the hardware to the API. (Rooting or changing kernel can often solve USB connectivity issues, but only attempt if you know what you're doing).
USB OTG connection.
Sufficient power on the USB bus.

If USB devices are detected, details reported include:

Device Serial Number
Vendor ID
Product ID
Manufacturer String Descriptor
Product String Descriptor
Class, Subclass and Protocol
USB Version
Max Power
Number of Configurations
Number of Interfaces
Interface and Endpoint Info

Note the amount of info shown will depend on the USB device and the amount of access allowed.