Samsung 850 PRO 512GB SSD | MLC NAND | High Endurance | 20TB Written | VERY GOOD

Samsung 850 PRO 512GB SSD in excellent working condition.

This is the PRO model using 2-bit MLC NAND (not TLC), originally sold with a 10-year warranty and designed for high endurance workloads.

Used previously as an OS drive in a server environment (duplicate drive from the same system).

Health: 97% (see CrystalDiskInfo screenshot)
Total host writes: ~20 TB
Rated endurance: 300 TBW

Only about 6–7% of the rated lifetime endurance has been used.

SMART extended self-test completed successfully.
No errors, no bad sectors, no pending sectors.

Firmware: EXM02B6Q
Interface: SATA III 6Gb/s
Supports S.M.A.R.T., TRIM, NCQ

Samsung 850 PRO series is known for:
• MLC NAND with higher endurance than typical consumer SSDs
• Excellent reliability record
• Strong sustained performance

Photos show the actual drive and SMART information.

Drive will be secure erased before shipping (total host writes may increase slightly due to the erase process).