Question about encryption on ICS

[Sajan Parikh]

I've set my device policy to require encryption in order to connection to our Enterprise account now that we've all got ICS on our phones.

I had a bit of a question, as did others...

My phone (Samsung Galaxy SII Skyrocket) has 3 storage devices...

Device Storage - Assuming this is the OS and /home directory
USB Storage - The 16GB flash storage Samsung has in there
SD Card - My 32GB SD card

When I got to Settings -> Security and look at the encryption options, I only see two. One of the device and another for SD card.

I was wondering if the device encryption included the USB storage.

Thanks for any information.