DAS200 is a low-cost, single-chip solution for digital home & small office storage appliances. Features of the DAS200 include advanced RAID modes. Its available from leading storage partners in pre-configured set-ups with e SATA host connections; also include USB (Universal Serial Bus) host connections. Simply open the box & connect the appliance with an appropriate host cable & HBA (e SATA host bus adapter can be purchased separately & must be installed in your host computer); its that simple. Its a populated external Serial ATA (e SATA) with two hard disk drives (HDDs), each Storage Appliance can manage as much as 2, 000 gigabytes of data, depending on the capacity of the hard disk drives that are installed.