MAIN OVERVIEW FEATURES: Host Interface: PCI Express 2.0 x4Controller Type: Serial ATA/600RAID Supported: YesRAID Levels: 0,1,5,10,JBODTotal Number of SATA Ports: 4Number of SATA Ports (Internal): 2Number of SATA Ports (External): 2Height: 2.6"Width: 3.1"Form Factor: Plug-in CardWeight (Approximate): 8 ozPackage Contents: RocketRAID 642L Serial ATA Controller2 x SATA CablesSoftware CDLow-Profile BracketQuick Installation GuidePlatform Supported: PC,MacLimited Warranty: 1 Year