Drives for External Media Bay Module

Where are the hard drives for the External Media Bay Module for Select Dell Latitude E-Family Laptops? <ADMIN NOTE: Broken link has been removed from this post by Dell>

The discription says "Accommodates the Dell media modules - CD-ROM, CD-RW, DVD-ROM, CD-RW/DVD and second hard drive" but I can't find any listing for the drive.

A better solution would be to offer an custom 2.5" drive case that uses this port for data and power.  Other eSATA drive cases require an eSATA port for data and a USB port for power.  Since your cobination eSATA/USB port provides both data and power busses for the optical drive, I assume it could do the same for HDDs as well.