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On Thu, 16 Oct 1997 02:18:30 -0800, Mike Ford wrote: >One of my friends is working on a PCMCIA IDE adapter as a commercial >product, and having some real troubles. > >The drives don't seem to be getting enough power, requiring a external >additional power supply. > >Nothing over a 2.1 GB drive is seen in W95. > >Any ideas? > > > You need to have a good supply of 5V and 12V coming out of the power supply, but all that the 2.5" drives need is the 5 volt line. I don't know about the amps, but drives would take a fair amount of current, because you have the board, servo (to spin up the drive), voicecoil (that is, the heads), etc., and may require a lot of current. I don't know why nothing over 2.1 gigs works, but you might also want to try partitioning it differently, too. The only reason I can think of that the larger drives woud consume more power is because they need to spin a bit faster because of the increased need for a fast data transfer. BTW, what OSes would this adapter be compatible with? Regards (and also my 5 cents this time). Paul