WD TV Live Hard drive issues

I have a WD TV live media player . A few questions
Can I have two drives at the same time one in the rear USB and one in the Front USB.

Number two
I just purchase a 1 tb hard drive it does not recognize it. I have reformat it and no luck. It is a My Passport 1 TB . It is NTSF format

Number 3
If I buy a WD network drive 4 TB will the WD TV live be able to view it and play media from it

Please post the model number so we know exactly which model you have. WD made too many products with similar names.