This BUSlink 4-Bay RAID hard drive supports large capacity and dual USB 3.0+eSATA interface. It supports Intelligent RAID function: RAID 0, RAID 3, RAID 5, RAID 10, and Large. Removable HDD trays support hot-plug replacement of drives (only for RAID with redundancy mode). HDD intelligent sleep function is supported. The LCM display and buttons support convenient setting of RAID modes and status display. Optional password allows locking of RAID settings. Cooling fan maintain safe operating temperature. Included CD allows software control of RAID mode and status display in PC. Skid proof and shockproof rubber feet mat ensure safe operation.CipherShield Hard DriveBUSlink CipherShield encrypted hard drive prevents unauthorized access to your digital data. Using the latest cryptography algorithm software to protect sensitive file is nothing new. However, loading that same encryption into a removable CipherKey - that when removed not only makes all the data stored completely unreadable, but the drive itself becomes transparent and is completely invisible to the operating system. Plug the CipherKey in, the drive is once again visible and files immediately decrypted and accessible. Now that's new. The fact that this drive is portable, can plug into any USB port and immediately accessible on any operating system, is just icing on the cake.- FIPS 140-2 compliant and NIST certified AES 256-bit hardware encryption algorithm- RAID 0 configuration for increased I/O performance for 4TB and above- CipherShield Smart Insert technology with CipherKey to authenticate the drive- Faster, easier to use, and provide a better security than software encryption- Operates independently to the OS: does not require separate drivers- Encryption is on the removable hardware key; can be removed and stored away to prevent unauthorized access- Conforms to HIPAA regulation regarding patient privacy, and Sarbanes-Oxley Act compliance over corporate financial and accounting practice