Can the HP Z420 Workstation be converted from a tower to a desktop configuration?

Yes, the Z420 Workstation (only) can be operated in either mini-tower or desktop configuration. The conversion process involves removing the front bezel, repositioning the optical drive bay filler panel, rotating the HP logo 90 degrees counterclockwise, and reinstalling the EMI filler panels and optical drive rotated 90 degrees. A video of this task is available at http://www.hp.com/go/sml. (Page 23)