Description: Model NO. U200012000 Standard EIA-RS310D Dimension 481mm x 507mm x 2U (W x D x H) (18.9” x 19.96” x 3.48”) Material SGCC / 1.2mm thickness, Aluminum front plate M/B ATX ( 10” X 12”) Drive bays 3.5" HDD x9 Coolings 3 x 8cm Indicators Power, HDD LED Controls Power on/off, USB port x 2 Slots 7 (low-profile PCI or PCI-E) Power Supply PSII Power supply