Provided are a display device and method. The memories may be dedicated embedded memories, or they may be distributed memories formed using memories or lookup tables in logic elements or other appropriate circuits. The first and second RANs use different radio access technologies. The side portion and the deck portion define a longitudinal channel which is open at least at an end of the module. Still further, each of the first and second prepit rows has at least three types of mark lengths. The first internal fan is attached to the first pole segment.