Mediasonic HFR2-ASU3S2 SmartShield 4 Bay External Hard Drive Enclosure Hardware Embedded 256-bit NIST certified AES Encryption Smart Key Access - Easy to use, No Key, No Access to the data Hardware embedded Raid support Raid 0 / 1 / 3 / 5 / 10 Support all brand of 3.5" SATA I / II / III hard disk drive up to 3TB per drive Transfer rate up to 5.0Gbps via USB 3.0 Hardware Embedded 256-bit NIST certified AES Encryption Smart Key Access - Easy to use, No Key, No Access to the data Hardware embedded Raid support Raid 0 / 1 / 3 / 5 / 10 Support all brand of 3.5" SATA I / II / III hard disk drive up to 3TB per drive Transfer rate up to 5.0Gbps via USB 3.0 Transfer rate up to 3.0Gbps via eSATA Supporting OS Windows VISTA 32/64 bit, Windows 7 32/64 bit (with MBR enabled, supports total capacity up to 2TB) Windows Vista 32/64 bit, Windows 7 32/64 bit (with GPT enabled, supports total capacity more than 2TB Mac OS 10.3 or later Power Adapter: 100V to 240V