SilverStone's RM23-502-MINI is a high performance industrial storage server chassis designed for the professional storage environment. It is well-equipped with hard drive trays compatible with 2 x 5.25" devices, 2 x 3.5" HDD and 1 x 2.5" SSD, motherboard support of up to Micro-ATX form factor, and PS2 (ATX) / 2U single / 2U Redundant PSU compatibility with built-in fan bracket which can accommodates two 80mm x 25mm fans. With an overall package designed for maximizing efficiency, flexibility, and durability, the RM23-502-MINI is a great choice for professionals or data center engineers looking to build a storage server.