Seagate BarraCuda Compute ST4000DM004 4TB 3.5-inch SATA hard drive, serial WFN5E0WP. CrystalDiskInfo reports Good health with 24,836 power-on hours, 28 power cycles, zero reallocated sectors, zero reported uncorrectable errors, and zero command timeouts. The exact drive label and full health report are pictured.