CP054 is a full metal drive cage that supports 12 x SAS/SATA drives that fits inside 3 x 5.25” external bays. It is specifically designed for Industrial PC, Media Workstations, High Performance Servers, Surveillance Systems, Medical Systems and Military Rugged Computers. Rear connectors use miniSAS (SFF-8643) and each connector allows to connect up to 4 drives in single miniSAS connector, reducing the amount of cables that needs to be connected to operate.