Netac Internal SSD NVMe PCIe Gen3x4 M. 2 2280 3D NAND Flash Read Speeds up to 3100MB/s. C Cache Performance Internal. Device Type: Internal Solid State DriveSSD. Read : Up to 310,000K. Maximum 4K Random Read : Up to 310,000K. MTBF: 1,800,000 hours. Operating Humidity: RH 90% under 40 celsius degree. Weight: 10.5g / 0.37oz. Production Height: 3.80mm. Certifications: RoHS, CE, FCC, BSMI, KC. 1GB=1,000,000,000 bytes. Due to different capacity algorithms and partial capacity are used for system files, management and performance optimization, so the actual available capacity may be less than the identifying capacity.