HP Compaq 6300 Pro SFF Desktop Computer (Refurbished by Microsoft Authorized Refurbisher) Operating System Windows 7 Professional Windows 10 Pro (Your choice from Drop-Down Menu) Processor Intel Core i5‑3470 3.2GHz (6 MB cache, 4 cores) Hard Drive 160GB 500GB 1TB 3.5 7200 RPM (Your choice from Drop-Down Menu) Memory 4GB 8GB 16GB DDR3 SDRAM (Your choice from Drop-Down Menu) Graphics Card Integrated Graphics with VGA and DisplayPort Output Optical Drives DVD-RW Card Reader Floppy No Audio Integrated Power Supply 240 W active PFC 100 - 240 V AC Monitor Not Included Warranty 3 MONTH HARDWARE WARRANTY (Please note first 30 days are money back guarantee. 60 days after 1st month qualify for replacement of defective hardware on computer only) What is in the box? (1) HP Compaq 6300 Pro SFF Computer (1) Power Cord (1) Pre-installed Microsoft Windows (Windows 10 Pro or Windows 7 Pro) (1) USB Keyboard and Mouse Other items you may consider adding to your order: WiFi Adapter Speakers Monitor Please Read - Important Information: The images of the product are stock images and may slightly vary from the actual product you receive. Also, we do our best to be as accurate as possible in our product description and details. However, some information may vary slightly from the standard stock specifications that we use and provide. If you have any issues with the item or you are not happy with your order; you can return the item within 30 days and request for an exchange or refund. In this case please send us a message using eBays messaging service and one of our customer service representatives will immediately get back to you (usually within one business day). Our hours of operation are 8am - 4pm PT Monday-Friday. Thank you for purchasing from RefurbishedPC!