COOLMAX DBAY SATA ENCLOSURE Black NAS External Enclosure For Two 3.5" SATA Hard Drives, Web Based Managing Interface Supports two 3.5" SATA I/II HDD with up to 4TB (2x 2TB) capacity, Built-in 80mm cooling fan File Management and sharing: FTP server, Web Disk server, Network Neighborhood 10/100/1000 Gigabit RJ-45 port, USB 2.0 for Print Server, USB 2.0 Type B port Transport Protocols: TCP/IP, File Protocols: SMB/CIFS, HTTP/HTTPS, FTP; RAID: RAID 0, 1 and Linear; File system: EXT2 / EXT3 / NTFS