Tablets don't have optical drives and other spinning contraptions. And ultrabooks don't either ... right? Well, not necessarily. Intel's ultrabook specs don't demand a DVD-free design, and some manufacturers have added optical drives to their thin-and-light laptops. For instance, the Dell Inspiron 14z Ultrabook has a DVD-RW drive, as does the 14-inch Samsung Series 5 Ultra. And that's a good thing. Enterprise users may need to load an optical drive from time to time, possibly to access valuable corporate data archived on DVDs or CDs.