External drive shows as internal

[qtrim]

I have a Rosewill RX-DU100 Sata drive dock. Whenever I plug a HD into it on any of my W7 Pc's, it shows up as an internal drive. That's great for me as I use Carbonite and they only backup internal drives. I was wondering why W7 sees it as an internal and I could fool Windows into thinking other drives were internal as well?

 

[Maguscreed]

If you are connecting using the eSATA connection and not a usb that would basically explain it away.

 

[qtrim]

It's using USB as the interface.

 

[DeaconFrost]

In that case, how are you determining that the drive is showing as internal?

 

[qtrim]

It shows up under "hard disk drives" and not under "removable storage"