Western Digital Gold 16TB (WD161KRYZ) enterprise SATA III hard drive. Pulled from a decommissioned storage array, tested and working. Power-on hours: 43,435 (see SMART screenshot). SMART overall health: PASSED, 0 reallocated sector(s), 0 pending sector(s). Condition: Used - fully functional, minor cosmetic wear from rack use. No physical damage. What's included: drive only (no cables/screws unless stated). Please review the SMART screenshot for full drive history before buying - happy to answer questions about the source system.