5 ms·
The most important bit for me: It also has better power output, 900 milliamps compared to 100 milliamps with USB 2.0. That means up to four devices can be char
by jwilliams 18y ago
The most important bit for me:
It also has better power output, 900 milliamps compared to 100 milliamps with USB 2.0. That means up to four devices can be charged from a single USB port and charged faster.
This is good news - although afaik, USB2.0 actually delivers up to 500mA (in units of 100mA).
Either way, will be nice to finally have a contender for the universal charger.
- mattmaroon 18y agoI can't wait for larger USB hubs that don't need to be plugged into the wall.
- ken 18y agoUSB 1.1/2.0 is required to deliver 100 mA per port, but may deliver up to 500 mA. Devices state their power requirements (in units of 1 or 2 mA, IIRC) during enumeration, which always runs at 100 mA, and the host computer says yea or nay. And yes, the USB spec actually measures "power" in "milliamps".
- jrockway 18y agoAnd yes, the USB spec actually measures "power" in "milliamps". That's OK, since it's always the same constant factor (5) away from the real power.