Brand New - 990 PRO PCIe 4.0 NVMe SSD 1TBSpecs from Samsung's product page:
General Features:

• Application: Client PCs, Game Consoles
• Capacity: 1,000GB (1GB = 1 Billion bytes 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
• Dimensions (WxHxD): 80 x 22 x 2.3 mm
• Weight: Max 9.0g
• Form Factor: M.2 (2280)

Storage Memory:

• Type: Samsung V-NAND 3-bit MLC
• Controller: Samsung in-house Controller
• Cache Memory: Samsung 1GB Low Power DDR4 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 1,200,000 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

Environmental Specs:

• Operating Temperature: 0 - 70 ℃
• Shock: 1,500 G & 0.5 ms (Half Software: Magician Software for SSD management

Special Features:

• TRIM Support: Supported
• S.M.A.R.T Support: Supported
• Garbage Collection (GC): 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

Power Consumption:

• Average Power Consumption (system level):
  • Average: 5.4 W
  • Maximum: 7.8 W (Burst mode)
    Actual power consumption may vary depending on system hardware & configuration
• Power Consumption (Idle): Max. 50 mW
  Actual power consumption may vary depending on system hardware & configuration
• Allowable Voltage: 3.3 V ± 5 %
• Reliability (MTBF): 1.5 Million Hours