Biwin Elite Series 60GB 2.5-Inch SATA III 6Gb/s SSD Solid State Drive w/ TRIM Support & SandForce SF-2281 60GB 2.5-inch SATA III 6Gb/s SSD; backward compatible with SATA II SandForce SF-2281 SSD processor with highly reliable MLC NAND flash Up to 550/520 MB/sec sequential read and write speeds and up to 65,000 4K IOPS Supports AES-128/256 bit encryption, TRIM, Garbage Collection, NCQ, and SMART features BCH ECC engine corrects up to 55 bit per 512-byte sector