This refurbished computer is ready to use straight out of the box. It has gone through a thorough and rigorous refurbishing process as well as Quality Control Testing. First we erased all of the previously stored data according to DOD standards. Then we replaced any failing or bad hardware including the hard drive memory and capacitors. We have verified that all of the ports and connectors are in proper working order. SAVE TIME with the freshly installed digital product key for Windows 10 operating system. No more keying in 25 tiny hard to see characters or loading time to activate. It will automatically activate once the license agreement is accepted with the click of a mouse! We are one of the few who are actually MICROSOFT AUTHORIZED to refurbish these machines. Many of the others are just Microsoft REGISTERED. These sellers aren t able to offer the same level of quality. Buy with confidence from the #1 Microsoft Authorized Refurbisher in the United States. Product Features Manufacturer/Model: 6th Generation Dell OptiPlex Processor: 6th Generation Intel Core i5 Memory Installed: 16GB DDR4 Maximum Memory: 16GB Memory Slots: 4 Slots Hard Drive: 512GB SSD Optical Drive: DVD ROM Video Card: Integrated/On-Board Graphics Monitor: 22 *Please note: Refurbished Monitors may have pressure mark(s) dead pixel(s) or minor scratches on casing but will not affect the prime viewing area. Our refurbished monitor brands may vary based on current available stock. Operating System: Genuine Windows 10 Networking / Communication: Network Card-10/100/1000 Wireless Networking-USB WiFi & Bluetooth Video Input: VGA Port-Not Installed Display Port-1 DVI Video Port-Not Installed HDMI Port-1 Additional Ports: USB 2.0-4 USB 3.0-4 Serial Port-Not Installed Parallel Ports-Not Installed Digital Card Reader-Not Installed Weight: 15.5 Dimensions: Height-10.100 Length-19.300 Width-15.300 Product Color: Black Form Factor: Desktop Keyboard: External USB Mouse: External USB Product Manual: We do not have manuals but they are downloadable from manufactures website Additional Information: Item Condition: Grade A refurbished condition Package Contents: Dell Optiplex PC Pre installed Windows 10 power cord(s) keyboard & mouse and BlairTech quick-start guide