Description: Model NO. U2005H3000 Standard EIA-RS310D Dimension 481mm x 400mm x 2U (W x D x H) (18.9” x 15.74” x 3.48”) Material SGCC / 1.0mm thickness M/B MINI ITX ( 6.7” X 6.7”) Drive bays SLIM ODD X1, 3.5" Sata/SAS Hotswap x 4, 3.5"HDD x 3 Coolings 1x 8cm ball bearing (middle) on windpipe design Indicators Power, HDD LED Controls Power on/off, system reset, USB port x 2 Slots 1 (PCI or PCI-E) Power Supply PSII Power supply