I took it out from my Asus when New and replaced it with a 1 TB.
It's never been used. Dormant for 2 yrs.

新買Asus替換1 TB時拿出的,一直閒置,可以說是新的因為未用過.
Western Digital 的頂級商用黑牌系列.

One of the best & most durable NVME SSD from Western Digital
WD Black NVMe SSD M.2 2280 250GB
PCIe Gen3 8 Gb/s, up to 4 lanes
WDS250G2X0C
Sequential Read MB/s up to (Q=32, T=1)⁶ 3,000
Sequential Write MB/s up to (Q=32, T=1) 1,600
Random Read 4KB IOPS up to (Q=32, T=8) 220,000
Random Write 4KB IOPS up to (Q=32, T=8) 170,000
Endurance (TBW) 200
Average Active Power (mW)⁹ 110
Low Power (PS3) 70mW
Peak Power (10us) 2.8A
Slumber (PS4) Low Power 2.5mW
MTTF10 1.75M hours
Length 80 ± 0.15mm
Width 22 ± 0.15mm
Height 2.38mm
Weight 7.5 ± 1g