Designed for Select Synology NAS Models. 2 22110 Form Factor. PCIe 3.0 x4 Interface. Up to 750 MB/s Sequential Write Speed. Up to 3000 MB/s Sequential Read Speed. 1.8 Million Hours MTBF. Endurance up to 491 Terabytes Written. PCIe 3.0 x4 / M. Sequential: 3000 MB/s Random: 225,000 IOPS. Sequential: 750 MB/s Random: 45,000 IOPS. Mean Time Between Failures (MTBF). 1.8 Million Hours. Endurance (Total Bytes Written). 4.0 W (Active) 1.6 W (Idle). 32 to 158°F / 0 to 70°C. 40 to 185°F / -40 to 85°C. 4.3 x 0.9 x 0.2 / 110 x 22 x 4.5 mm. 5.5 x 4.2 x 0.9.