Trying to access drives after My Book housing failed

Working with a MyBookWord Duo that was configured as Raid 1.  As is common with this unit, the fan failed and the motherboard cooked.  (When attempting to power up I get no response from the unit, but the drives spin up fine when outside of the housing as described below.

Using a USB drive adapter, I can get both of the drives will spin up just fine, but when I go to Computer Management | Disk Management I can see the various partitions but under File System, the main partitions show a blank, rather than an NTFS or other format.  If I try to use Windows Explorer to see the contents, nothing happens.

This is the first time I am trying to view a mirrored drive in this manner.  Suspect that it has something to do with that, or perhaps a proprietary file structure.

Anyone know of a way to access the data on these drives?

Could it be a Linux ext2 or ext3 file system? If so, then you will need a utility such as Explore2FS if you intend to mount it on your Windows box.

Graphical Win32 explorer for Linux ex2fs partitions:
http://www.chrysocome.net/explore2fs

This beta software seems like it will mount ext2, ext3, and Reiser FS volumes:
http://www.chrysocome.net/virtualvolumes

However its author cautions that it is still buggy and under development.

Could we see the partition table and boot sector with Microsoft’s Sector Inspector?
http://www.users.on.net/~fzabkar/SecInspect.zip

Extract the above archive to the one folder and execute the SIrun.bat file. The procedure will generate a report file named SIout.txt which you can then upload to a file sharing service.