SilverStone introduced the RM51, a 5U rackmount case meant for servers and workstations, which can be tilted along its side to be used as a tower-type case. It supports motherboard form-factors that include SSI-EEB, SSI-CEB, E-ATX, and smaller. There are two PSU bays on offer, the main one being a conventional ATX/PS2; while a second SFX PSU can be deployed by replacing a 3.5-inch bracket. Internal drive bays include four 2.5-inch, and up to four 3.5-inch. You get room for a graphics card up to 455 mm in length, and depending on whether you use the expansion slot retainer, either 157 mm or 198 mm of height. The same goes to CPU coolers—181 mm with it, and 192 mm without.

The cooling setup of the SilverStone RM51 includes a mesh-type front intake that can hold either three 120 mm fans, or two 180 mm fans. Two 180 mm Air Penetrator 184i PRO are included with the case. The rear fan-cage holds two 80 mm, and there's another 140 mm vent at the rear I/O. You can mount up to a 360 mm radiator along the front intake, and a 120 mm radiator along the rear exhaust. Including the rear fan-cage, the case measures 440 mm (W) x 220 mm (H) x 485 mm (D). The case should be available in Asia and North America from the second half of February, priced at USD $489.99, with European availability expected in March.