the rules on power are simple.. 1 socket can give 1/2 amp.as for usb storage protocols, there are many.. ... ...iyonix covers a few standard ones.. in general, if you need to load a driver for the device on a PC, it isn't terribly likely to be standard..
John On 15/04/2011 08:47, David J. Ruck wrote:
On 14/04/2011 20:03, Dave Higton wrote:Sorry, Ron, I can't let that go unchallenged. I'm using a Seagate 2.5" external USB drive on the BeagleBoard. It does not require an external power supply, nor does it require plugging in to two USB ports. It runs perfectly happily from a single USB port that meets the USB specification, i.e. provides 500 mA. There is no earthly reason to start rumours of the existence of USB disc drives that do not meet this fundamental part of the USB spec.There are many external drive cases which contain desktop class 2.5" drives which are not capable of being reliably powered from a single 5V 500mA port. Others contain lowered powered laptop class 2.5" drives.It is incorrect to claim because you have one particular drive working with a Beagle board, that all such drives will work on an Iyonix.Cheers
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