Seagate ST3250310CS 250GB 7200RPM 8MB Cache SATA II 3.0Gb/s 3.5" Internal Hard Drive (PC, RAID, NAS, CCTV DVR) [Certified Refurbished] -w/1 Year Warranty This Certified Refurbished product is tested and inspected to look and work like-new, with limited to no signs of wear. The product comes with relevant accessories and a minimum one-year warranty. 250GB Capacity, 7200RPM Rotation Speed, 8MB Cache 3.5" Internal Hard Drive, SATA2, Heavy Duty, Low Power & Quiet Works for PC, NAS, NVR, Surveillance CCTV DVR Passed Factory Diagnostic Software + RE-CERTIFIED by State-of-the-Art software - Full "Sector-by-Sector" test to ensure best HDD quality! ZERO Bad Sectors!