MAIN OVERVIEW FEATURES: Number of Total Expansion Bays: 2Number of 5.25" Bays: NoNumber of 2.5"/3.5" Bays: 2Number of 1.8" Bays: NoDrive Interface: Serial ATA/600,Serial ATA/300Host Interface: ThunderboltMaterial: Acrylonitrile Butadiene Styrene (ABS),PlasticForm Factor: ExternalPackage Contents: RocketStor RS5212 Drive Dock Quick Installation Guide Green Compliant: YesGreen Compliance Certificate/Authority: WEEELimited Warranty: 1 Year