If they told you that the usb port was for adding additional storage and 
that you needed a SATA drive, then they probably assumed that you needed 
a SATA drive in an external storage box that connected to the dvr using 
a USB interface (cord).    Check out Weaknees as they probably carry 
things like that and will answer your questions if you have any.  They 
are not particularly cheaper than anywhere else, but they are fast and 
will assist you if necessary.

Dean Kukral

On 10/19/2010 10:46 PM, Delyle Dvorak wrote:
> I don't know if this will help, but when I talked to Direct TV about getting more storage space on my HD DVR, they told me I needed to purchase a Sata external drive. When plugged into the DVR, it becomes the primary drive instead of the one built into the system.
> DeLyle Dvorak
>
>    
> <snip>

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