Silverstone Tek 2U 12-Bay 3.5-Inch Hot-Swap Rackmount Storage Server Chassis Cases RM212 Backplane support for 12 port SAS/SATA drives and SFF8087 x 3 with SGPIO Includes three hot-swappable 80 x 38mm PWM fans Support E-ATX or SSI-EEB motherboard Support low profile PCI/PCIe x7 slots or Standard PCI/PCIe x1 riser card (option)