Hi all Just a quick update on the above . I finally got the duo 2300 to run perfect from a cf card in the cf to ide adapter connected direct to the ide connector. It will only run if i have a drive connected to the scsi connector as well ( can be spun down). When all this was done i decided to see if i could run a cf wifi card, The one i tried is a WISGO cf wifi card and it will not be seen by the mac all i get is the do you want to erase the drive box on start up. but i will keep trying. I will send an update later in the week when the next card i have bought turns up. Also i must report that booting from cf with the scsi hdd turned off give a battery time of 2 hrs 55 mins on a regular use . This battery normally give 1 hr 30 mins running the other drive so vast improvement there, also the duo is whisper quiet now. vicki