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).
Longer total lengths can be realized using repeater extension cables and CAT5 extenders for USB 1.0, 1.1, and 2.0. There is also a special class of USB 3.0 cables that contain circuitry to achieve a length of six meters (19.7 ft). The USB-IF Web site recommends a USB bridge to achieve lengths greater than 30 meters.