Doni, per IBM the microdrive has a CF+ type interface, to include on-board ATA controller and PCMCIA interface. See <A HREF="http://www.storage.ibm.com/hardsoft/diskdrdl/micro/datasheet.htm" target="_new">http://www.storage.ibm.com/hardsoft/diskdrdl/micro/datasheet.htm</A> and <A HREF="http://www.storage.ibm.com/hardsoft/diskdrdl/micro/whitepaper/smallformfactorsd.htm" target="_new">http://www.storage.ibm.com/hardsoft/diskdrdl/micro/whitepaper/smallformfactorsd.htm</A> .