WD Black 5TB Performance Desktop Hard Disk Drive - 7200 RPM SATA 6 Gb/s 128MB Cache 3.5 Inch  - WD5001FZWX Designed for creative professionals, gamers and system builders WD's StableTrac and Dynamic Cache Technology increase reliability and optimize performance 2X DRAM cache up to 128 MB (6TB, 5 TB only) for faster read operations Industry-leading 5-year manufacturer limited warranty Package includes a hard drive only - no screws, cables, manuals included. Please purchase mounting hardware and cables separately if necessary.