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>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. What are the power limits of PCMCIA slots according to the spec? I would be wary of a PCMCIA IDE Interface that did not use an external power supply to power the drive. >The only reason I can think of that the larger drives would 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? If I was looking for a PCMCIA IDE adapter then I would want the option to use cheaper 3.5" hds which means both +5V and +12V power. Currently with my thinkpad I use a SCSI PCMCIA card and carry around a Zip Drive with AC power supply. This setup is about the same as a IDE 3.5 Drive and I have no problem with it. 73 Eric ecottrell@doble.com