Micro USB cables that only charge but no data, no mounting etc (Samsung Galaxy S)
Broadly speaking, if you have a "USB" cable that only connects pins 1 &amp; 4 then you will get power and no data (Best Buy was selling cables like that as Universal USB Charging Cables a while back, not sure if they still do). Likewise, if you have a cable with only 2 &amp; 3, you will get data but no power. If you're curious, here's a Wikipedia page with the standard USB Pinout. 

Note: Micro uses the same pinout as USB A.