USB On The Go (OTG) is a USB protocol specification that allows USB devices like tablets or smartphones to act as a USB host. This means you can connect traditional USB devices like keyboards, USB drives, or other dongles to your host device.
We like to use these cables when running the RTL-SDR with phones or tablets, though they can be used for plenty of other USB devices. The cables are approximately 8-9 inches long, and have a USB Type A connector on one side and a USB C connector on the other. We don't currently provide any other USB OTG cable types.
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