Appearance,Dimensions, 50.8 mm x 29.85 mm x 4.85 mm (2.00" x 1.18" x 0.19")Weight, 9 g (0.32 oz)Interface,Bus Interface, SATA III 6Gb/sStorage,Flash Type, 3D NAND flashCapacity, 64 GB/128 GB/256 GBOperating Environment,Operating Temperature, 0°C (32°F) ~ 70°C (158°F)Operating Voltage, 3.3V±5%Performance,Sequential Read/Write (CrystalDiskMark), 256 GBup to 530/400 MB/s4K Random Read/Write (IOmeter), 256 GBup to 45,000/70,000 IOPS Terabytes Written (TBW), 256 GB160 TBW 128Mean Time Between Failures (MTBF), 2,000,000 hour(s)Drive Writes Per Day (DWPD), 0.5 (3 yrs)Note, Speed may vary due to host hardware, software, usage, and storage capacity.The workload used to rate DWPD may be different from your actual workload, which may vary due to host hardware, software, usage, and storage capacity.Warranty,Certificate, CE/FCC/BSMI/KC/RCMWarranty, Three-year Limited WarrantyWarranty Policy, Please click here for more information about the Transcend Warranty Policy.Warranty does not apply when SSD Scope's wear-out indicator displays 0% within the warranty coverage.System Requirement,Operating System, Microsoft Windows 7Microsoft Windows 8Microsoft Windows 10Linux Kernel 2.6.31 or laterTechnology,TRIM & NCQ Command,S.M.A.R.T.,DDR3 DRAM Cache,Advanced Garbage Collection,DevSleep Mode,RAID Engine,LDPC Coding,