MAIN OVERVIEW FEATURES: Number of Hard Drives Supported: 4Number of Solid State Drive Supported: 4Flash Memory Capacity: 4 GBProcessor Manufacturer: IntelProcessor Type: CeleronProcessor Model: J3455Processor Core: Quad-core (4 Core)Processor Speed: 1.50 GHzStandard Memory: 4 GBMemory Technology: DDR3L SDRAMEthernet Technology: Gigabit EthernetNumber of Total Expansion Bays: 4Number of Total Expansion Slots: 1Expansion Slot Type: PCI ExpressController Type: Serial ATA/600RAID Supported: YesRAID Levels: 0, 1, 5, 6, 10, Hot Spare, JBODHDMI: YesTotal Number of USB Ports: 4Number of USB 3.0 Ports: 4Network (RJ-45): YesOperating System: QTS 4.3Protocols: DNS,Telnet,DLNA,IPv6,FTPS,WEBDAV,SSL/TLS,AFP,CIFS,HTTPS,FTP,DHCP,SSH,SMB,SMTP,FXP,LDAP,iSCSI,IPv4,UPnP,TCP/IP,PPTP,HTTP,CIFS/SMB,DDNS,SNMP,RSyncHeight: 1.7"Width: 17.3"Depth: 19.6"Form Factor: Rack-mountableRack Height: 1UWeight (Approximate): 16.82 lbPackage Contents: Turbo NAS TS-453BU SAN/NAS Storage System 2 x Ethernet Cables Quick Installation Guide (QIG) Flat Head Screw (for 3.5" HDD) Flat Head Screw (for 2.5" HDD) Power Cord Country of Origin: TaiwanLimited Warranty: 2 Year