I have the Passport too, but
Originally Posted by Kelson
You probably have mentioned this already but what brand/model/size of external HDD are you using?
I know you said you planned on getting a 1TB WD Passport ultra. Is that what you settled on?
I learned from CM Tech Support that they do not support anything except 2 specific Seagate Model HHDs. So (not knowing that I needed to visit the Site to learn that before ordering from Amazon) I decided that the WD Drive made more sense. So, be aware if you depart from the "supported" Drives.