John Bowden wrote: > I have a external USB HD enclosure that takes its power from the one USB > socket. Its only failed to do so on one oldish tower that a friend of mine > has, on that machine it needed the second "power" connection. Got it from > Ebay thts also out of spec, as USB is speced for 2.5 watts, 500mA at 5V, per port. Typlical laptop HD is like 5 watts, more when spinning up. yes, I know it usually works. just saying...