Full aluminum built cooling body constructed to fit five drives within a three (5.25") bay fitting, the MB455 Series follows the tradition of industrial systems" needs for stability, durability, toughness and high sensitivities for mass storage operating conditions. It"s equipped with a hot swappable fan that may be detached if confined by depth limitations when integrated, or if replacement is necessary.Our removable fan requires no tools or wiring, simply swap with a new fan and back to operation! It is space saving and user friendly for industrialized system solutions.