You are purchasing a USED Western Digital WD Green WD10EZRX 1TB 64MB Cache SATA 6.0Gb/s 3.5" HDD.  The drives were used for archiving (some of these drives were accessed frequently while others were never touched after the initial data copy).  Most of these drives are under 10,000 Power On Hours according to the SMART Data.  The drives may contain labels or remnants of removed labels.