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).
Re: Long USB 2.0 Cable with DAC. I have used a quite sturdy 5m logilink cable for a lot of devices and not had any issues. I have also used a cheap extension less than 5m with cheap plugs that gave a lot of issues. So probably good to get something decent if it needs to be that long.