Samsung 990 PRO 4TB M. Application: Client PCs, Game Consoles. Capacity: 4,000GB (1GB = 1 Billion byte by IDEMA) Actual usable capacity may be less (due to formatting, partitioning, operating system, applications or otherwise). Interface: PCIe Gen 4.0 x4, NVMe 2.0. Dimension (WxHxD): 3.15 x 0.87 x 0.091 inches. Weight: Max 0.02 lbs. Storage Memory: Samsung V-NAND TLC. Controller: Samsung in-house Controller. Cache Memory: Samsung 4GB Low Power DDR4 SDRAM. Sequential Read: Up to 7,450 MB/s Performance may vary based on system hardware & configuration. Sequential Write: Up to 6,900 MB/s Performance may vary based on system hardware & configuration. Random Read (4KB, QD32): Up to 1,600,000 IOPS Performance may vary based on system hardware & configuration. Random Write (4KB, QD32): Up to 1,550,000 IOPS Performance may vary based on system hardware & configuration. Random Read (4KB, QD1): Up to 22,000 IOPS Performance may vary based on system hardware & configuration. Random Write (4KB, QD1): Up to 80,000 IOPS Performance may vary based on system hardware & configuration. Operating Temperature: 32°F – 158°F (0 – 70? Operating Temperature). Shock: 1,500 G & 0.5 ms (Half sine). Management Software: Magician Software for SSD management. S. M. A. R. GC (Garbage Collection): Auto Garbage Collection Algorithm. Encryption Support: AES 256-bit Encryption (Class 0), TCG/Opal IEEE1667 (Encrypted drive). WWN Support: Not supported. Device Sleep Mode Support: Yes. Average Power Consumption (system level): Average: 6.5 W, Maximum: 8.6 W (Burst mode) Actual power consumption may vary depending on system hardware & configuration. Power Consumption (Idle): Max. 55 mW Actual power consumption may vary depending on system hardware & configuration. Allowable Voltage: 3.3 V ± 5 % Allowable voltage. Reliability (MTBF): 1.5 Million Hours Reliability (MTBF). Installation Kit: Not Available.