Check the listing for details. HP ProDesk 400 G1 DM Micro - 500GB Hard Drive with Windows 10 Pro 64-Bit Loaded. Condition: Used. Listed at 39.50 USD. BID WITH CONFIDENCE!! See Our Feedback!USA Owned & OperatedFast shipping from Central USA Detailed Description This hard drive was made specific to the PC in the title.Drive was loaded with GENUINE Microsoft Windows. Hard Drive has been FULLY tested.Includes Microsoft Works, PowerDVD, Adobe Reader and Antivirus. Windows 10 Key Needed for activation. It is not included. < Payment Instructions Compatibility is the buyer's responsibility and should be addressed before bidding. If you are unsure if the hard drive is compatible with your system, please email us. Thank you very much for looking. Return Policy Please contact us before starting a return. If a computer has a problem booting it is typically the SATA Operation setting in the motherboard's BIOS. It is very easy to change. This is uncommon, but if it does happen, it can be very easily changed in 2 minutes. Just contact us and we will send very easy instructions. Matt 25:40