Factory sealed. 

Capacity: 960 GB
Interface Specification: PCIe 4.0, NVMe 1.4
Interface Speed: 64 GT/s (Gen4 1x4, 2x2)
Memory Type: BiCS FLASH TLC

Performance in single port (1x4) mode (Up to)
Sustained 128 KiB Sequential Read: 6,900 MB/s
Sustained 128 KiB Sequential Write: 1,400 MB/s
Sustained 4 KiB Random Read: 880,000 IOPS
Sustained 4 KiB Random Write: 50,000 IOPS

Mechanical
Height 15.0 mm + 0, - 0.5 mm
Width 69.85 ± 0.25 mm
Length 100.45 mm Max
Weight 130 g Max

Link to the datasheet below.
https://americas.kioxia.com/content/dam/kioxia/shared/business/ssd/enterprise-ssd/asset/productbrief/eSSD-CM6-R-product-brief.pdf