Norco 4U Rack Mount 20 x Hot-Swappable SATA/SAS 6G Drive Bays Server Rack Mount RPC-4020

20x hot-swappable SATA (I or II) / SAS drive bays Supports up to twenty 3.5" SATA (I or II) or SAS disk drives;1 x slim CD-ROM bay,1 x FDD bay, 20 x 3.5 " hot-swappable drive bays , 1 x HDD bay Hot-swappable HDD tray with special designed power-off and loc