RM-3055 has a unique space-saving design. It is a 3U chassis with a4U capacity. It can support different version of AT, Micro ATX and ATXM/B (up to 12" x 13 "). Whether it is used as a web server or highperformance computing or database server, this chassis provides amplestorage space and cooling. Its 7 PCI slots support PCI, PCI 64bits,AGP, and PCI-Express add-on cards which enable expansion and upgradesfor specialized functions and tasks.