Description Product Description       : Transcend SATA III 6Gb/s SSD225S 250GB SSD Product Category             : SSD       Appearance Dimensions 100 mm x 69.85 mm x 6.8 mm (3.94″ x 2.75″ x 0.28″) Weight 45 g (1.59 oz) Storage Flash Type 3D NAND flash Capacity 250GB/ 500 GB/ 1 TB/ 2 TB Operating Environment Operating Temperature 0°C (32°F) ~ 70°C (158°F) Operating Voltage 5V±5% Performance Sequential Read/Write (CrystalDiskMark) 2 TB Up to 550/460 MB/s 1 TB Up to 550/500 MB/s 500 GB Up to 530/480 MB/s 250 GB Up to 500/330 MB/s 4K Random Read/Write (IOmeter) 2 TB Up to 55,000/80,000 IOPS 1 TB Up to 55,000/72,000 IOPS 500 GB Up to 55,000/75,000 IOPS 250 GB Up to 40,000/75,000 IOPS Terabytes Written (TBW) 2 TB 720 TBW 1 TB 360 TBW 500 GB 180 TBW 250 GB 90 TBW Mean Time Between Failures (MTBF) 2,000,000 hour(s) Drive Writes Per Day (DWPD) 0.3 (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. Terabytes Written (TBW) expresses the endurance under the highest capacity. For Mac users please visit our Apple Solutions here. Certificate CE/ UKCA/ FCC/ BSMI/ KC/ RCM Warranty Three-year Limited Warranty Warranty Policy Please click here for more information about the Transcend Warranty Policy. Warranty does not apply when SSD Scope’s lifetime indicator displays 0% within the warranty coverage. Package Package Contents Full unit Operating System Microsoft Windows 7 or later Linux Kernel 2.6.31 or later