"Man-wai Chang" wrote in message
...
When I looked at the USB connector on the bottom of this one, pins 1 and
4 were the 5v output and gnd, but pins 2 and 3 were joined together, and
had a couple of resistors hooked to them, and disappearing into the
circuitry. So why is this ? Do they perhaps make 'alternate' use of

To trick the device into believing that it's connected to a PC. You need
this trick to charge devices like the iPod Touch!

http://www.gizmodo.com.au/2008/07/si..._ch argers-2/


That pretty much seems to cover the initial question. Thanks for the link

Arfa