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).
Maximum Lengths. According to USB.org, USB operating specifications limit the maximum length of the cable to 5 meters for full speed devices and 3 meters for any low speed devices. 5 meters is around 16 feet 5 inches, and 3 meters is around 9 feet 10 inches.