2016 HP Pavilion Slimline 450 Desktop (AMD Dual-Core Processor, 4 GB RAM, 500 GB HDD, WiFi, DVD, Windows 8.1 Upgradable to Windows 10) (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 AMD Dual-Core E1-6015 APU with Radeon R2 Graphics (1.4 GHz, 1 MB cache); 4 GB DDR3-1333 (1 x 4 GB); 500 GB 7200 rpm SATA; Integrated Realtek ALC662, 10/100 Ethernet, 802.11b/g/n wireless, SuperMulti DVD RW Front Panel: Memory Card Reader: (SD, SDHC, SDXC, MS, MS Pro), (2) USB 2.0, (1) Headphone, (1) Microphone; Rear Panel: (1) DVI-D, (1) VGA, (2) USB 2.0, (1) USB 3.0, (1) RJ-45 LAN, (1) Audio: Line-in, (1) Audio: Line-out, (1) Microphone, Windows 8.1 operating system, upgradable to the new Windows 10; Power supply: External 65W; Expansion Slots & Bays: (1) PCI Express half-length mini card (occupied), (1) Slimline 5.25"" Drive Bay (occupied), (1) 3.5"" Drive Bay (occupied)