A free program for Android, by am 600.
It is a free app that is very easy to use, and it does not have any complicated user interface. All you need to do is to select the USB device that you want to check, and then you will be able to see if it supports USB OTG or not. If it does, then you will be able to see what type of device it is, and you will be able to choose the right one for you.
You can also check the device's version, manufacturer, and other details. This is very useful if you are planning to purchase a new device, or if you want to upgrade your existing one.
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