Tips for Heavily Oxidized Aluminum. First of all, determine the extent of oxidation on the aluminum surface. If it is determined that the surface is in relatively good shape, i.e. light oxidation, then skip this step and move on to polishing with Flitz.
Q1: How long of a cable can I use to connect my device? A1: In practice, the USB specification limits the length of a cable between full speed devices to 5 meters (a little under 16 feet 5 inches). For a low speed device the limit is 3 meters (9 feet 10 inches).
Key difference: Mini USB predates the micro USB and both have five pins. However, mini USB has a life cycle of 5,000 connects and disconnects, while, micro USB has a life cycle of at least 10,000 connects and disconnects. Also, micro USB is smaller than mini USB.