SimpleTech STD-4000HD/40 40GB Internal Notebook Drive Hard Disk Drive (Caddy Drive Upgrade for Dell) Extend the life and productivity of your laptop by adding this, easy to install, additional hard drive Guaranteed compatible with the laptops listed on the compatibility page Quick and easy to install, simply slide out your current hard drive, DVD drive, floppy drive, etc. and slide in this new hard drive 3 Year Warranty Highest quality assurance rating available - ISO9001 Certified