On Tue, Sep 22, 2009 at 10:25 PM, t.piwowar <[email protected]> wrote: > USB, being a PC technology picked up by Apple during its dark days, is > technically a mess. One can have no reasonable expectation about what can > and can't be successfully powered. I carry a portable drive with me that > works fine with FireWire. To connect it using USB I have to carry an extra > cable. First I have to plug in one cord into the drives power socket and > plug that into one USB port. Then I plug in a second USB cord to carry data > and supply additional power. The drive won't work unless it is getting power > simultaneously from two separate USB connections. I see that as pretty > shameful engineering.
i have such a USB drive. I wound up jumping a diode on the circuit board within the USB drive that is related to power supplied from the USB port on the computer. Jumping that diode allows the use of but one USB connection for both data and power. Mediocre engineering corrected by the user. Steve ************************************************************************* ** List info, subscription management, list rules, archives, privacy ** ** policy, calmness, a member map, and more at http://www.cguys.org/ ** *************************************************************************
