Chenbro RM13108 1U High Disk I/O Performance Server Rackmount Chassis 8 X 2.5 SAS & SATA Hotswap Bay No Power Supply Built in 8x Hot-Swappable SATA (I and II) & SAS drive bays Supports up to eight 2.5" SATA (I and II) as well as SAS disk drives 1 x Slim CD-ROM bay,1 x FDD bay, 8 x 2.5 " Hot-Swappable drive bays, 1 x Full Height and Full Length PCI/PCIe Expansion Slots, 1x Front USB access Support up to EEB (12" x 13"), CEB (12"x10.5"), or smaller 1U motherboard. Movable Motherboard sitting base Dimension (WxHxD, inch) 16.9"x1.7"x23.5" (Support most of Universal Rack Rail) 28.7lb, ROHS NO POWER SUPPLY INCLUDED