100W Power Delivery Spec Approved For USB 2.0 And 3.0

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wing

Well written article , I appreciate very much
chnlove review

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livebriand

Spam link fail.

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devin3627

i dont get how data and 100w power can transfer on one cable without electro-magnet interference. can someone explain this to me?

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Eoraptor

That's where the thicker "power capable" cabling comes in, extra shielding and balasts. Also, I assume much like modern droid phones, it would have a "charge only" mode, depending on the software drivers.

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vrmlbasic

ICS took away my RAZR's "Charge only" mode when connected to a PC...

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Eoraptor

you might try cyanogen mod 9 if you can get it on there without trashing your warranty. I have charge-only mode on my droid2 with that and it's ICS

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devin3627

i've had bandwidth problems using a thin usb 1.0 cable with a 2.0 transfer... idk guys, charging "only" no data.

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loozer

When you connect two laptops together, which device charges the other?

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limitbreaker

neither, laptops don't charge up by USB power.

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Brad Chacos

This specification enables charging of notebooks and powering of external drives.

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DasHellMutt

Yes, They can. That's part of the point of this spec and 100 watts is plenty to do it. Most laptop bricks are 90W or less.

To answer the question: The charging direction is supposed to be select-able but I haven't seen details of how that is done. Since they do specify that the cable need not be reversed, I assume it would be controlled by software. Surely they wouldn't expect hardware or cable manufacturers to use something as inelegant as a physical switch.

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AETAaAS

Nice... All the while ago, I'd hoped that USB 3.0 would have delivered the power necessary to run a 3.5' external drive. Since that didn't come to pass, perhaps we will see such drives with this next step. :D

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DasHellMutt

I agree. More likely though 3.5" drives will be gone in the next few years so it won't be an issue.

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Eoraptor

I wouldn't say they'll be ~gone~, but they definitely will be less common. There's still going to be a need for such big and capricious factors, especially as these drive-less ultrabooks proliferate and need a local way to be backed up. Terabyte 2.5's are only just now coming on and are still fairly pricey after all. Plus, whose to say something won't come along to fill all those empty 3.5" slots in desktops like holo-optical drives.

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don2041

agreed 100%

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