Valuegist 120G SSD 2.5 Inch SATA 3 (SATA III) Internal Solid State Drive for NAS Desktop PC Laptop Warranty 3 Years, anti-counterfeiting check from www.faspeedssd.com Sequencial read/write speed 500/390MB/s under SATAIII environment Light but endurable (40 gram or 1.4 ounce), alumilum alloy shell with black premium surface treatment 100% high temperature tested before outgoing. Data retention up to 80 centigrade Efficient Power Management; Performance-cost effective design, idea replacement for hard disk