Can anyone identify this portable?

I have received an email from a gentleman asking if I can identify a portable computer that he used to own. The machines ran DOS (MSDOS), and appears to have a standard PC/XT style keyboard layout. It is a "box" machine line the early IBM portable or Compaq portable. It has a monochrome screen (CRT), somewhat to left of center. Left of the screen is "open space". To the right of the screen are three 1/2 height 5.25" drive bays running horizontally (on this machine it has a floppy, a hard drive and what looks like a filler plate). Below the drive bays there are four "knobs" and what looks like it may be a switch. On the far right (beside the knobs) it looks like they keyboard cable comes out of a hole in the front panel. I have posted the picture he sent at: http://www.dunfield.com/pub/portable.jpg