On the left and right hand sides of mounting drive bracket are two sets of 6-32 mounting holes for installing this unit inside a computer case. A closer look at the back of the Crystalfontz 632 16x2 USB LCD Kit reveals that this product is not your typical LCD display. The principal design of the original 632 serial PCB is still in place with a few upgrades. The USB interface version of the 632 has the full feature set of the serial interface and allows connection to a USB port using only a single cable for both power and data. Crystalfontz has also upgraded to Character Generated Rom (CGROM) from version 1.3 to version 2.0. The CGROM is responsible to the most of the graphical display which includes numeric superscripts, icons, mathematical symbols, fractions, a variety of arrows, currency symbols, and more.