[QUOTE=tmc8080;2655062]The idea is to power more devices through just the cable… while that might be possible for some devices such as a computer monitor (assuming 75W consumption avg on brightest setting)-- most people will not realize all this power has to come from SOMEWHERE… and most power supplies in the market are NOT up to the task… if you start sending power through USB, there has to be a device to supply it… and if you do it through computers they will need to have the proper wattage well in excess of what’s needed… and these things are NOT cheap.
I’m kind of annoyed USB 3.0 motherboards and equipment are STILL so damned expensive compared to their 2.0 counterparts… that premium should have ended by the beginning of THIS year! Also, they will need to use a different connector for sending power… for some idiot will try to do it with a a 1.0 - 3.0 cable and start a fire…[/QUOTE]
For supplying the extra power, USB ports are powered via the +5V rail on PSUs, so it’s just probably adding extra power flow to that particular rail. Though I wonder if most higher wattage PSUs are able to handle one or a few of these high-powered USB connections…
I agree the connector head needs to be changed and the cables for the higher-powered need to be thicker. Personally I’d prefer that they over-engineer the cables rather than “just enough to get by”.