DEcosse... I think I understand now, ( finally ). Correct me, if I'm wrong, please? I need two cables. One is the TuneECU cable, which connects to the 16-pin connector, under the Rocket's seat. On one end, the TuneECU cable has a USB size fitting. The second cable I need is the "OTG" enabled converter, which plugs into the battery charging port, ( Micro-USB size ), of my Samsung Galaxy 10.1 Pro Tablet computer. The Micro-USB sized fitting is smaller than USB size. So, I connect my OTG cable to my TuneECU cable, ( in the middle ). In this manner, I'm now connected to both my tablet computer, and to the Rocket, because the OTG cable allows me to connect the Micro-USB, OTG cable to the USB connector of the TuneECU cable, by means of the converter. Because one end of the OTG cable has a USB sized connector, while the opposite end of the OTG cable has a Micro-USB connector. So, they call this cable a "converter". If I was using a laptop, or a rare tablet computer that has an external USB port, then I would only need one cable. The TuneECU cable. Have I got that right now? I hope so. Thanks... Russell