Lenovo ThinkCentre M90Z 23" FHD All-in-One AIO Premium Flagship Desktop Computer, Intel Core i5-650 up to 3.46 GHz, 8GB RAM, 500GB HDD, DVD, Gigabit Ethernet, Windows 10 Pro (Certified Refurbished) This Certified Refurbished product is tested and certified to look and work like new. The refurbishing process includes functionality testing, basic cleaning, inspection, and repackaging. The product ships with all relevant accessories, a minimum 90-day warranty, and may arrive in a generic box. Only select sellers who maintain a high performance bar may offer Certified Refurbished products on Amazon.com Processor: Intel Dual-Core i5-650 Processor up to 3.46GHz, 4MB Cache; 8GB DDR3; 500GB 7200rpm HDD 23" FHD (1920 x 1080) LED-Backlit Display; Integrated Intel Graphics; DVD-ROM, WiFi, USB 2.0: 2; Microphone-in: 1; Headphone-out: 1; DisplayPort: 1; USB 2.0: 4; VGA: 1; RJ-45: 1; Kensington Lock: 1; Power: 1 Windows 10 Professional 64 Bit (part of the activation code may be covered by grey "Microsoft" sticker, may want to use a coin to scratch it off) ; USB Keyboard & Mouse included