Acer DESKTOP 2 GHz Intel 500 GB |AXC-603 (Certified Refurbished) This Certified Refurbished product is tested & certified by Acer to look and work like-new. The product includes all original accessories, and is backed by a 90-day warranty. Maximize your creativity and your desk space: the Aspire XC Series Desktop is just one-third the size of a tower PC with dimension of 10.5" x 3.9" x 14.5" Intel Celeron Processor J1900 (2M Cache, 4 cores, up to 2.42 GHz), 4 GB DDR3L SDRAM (1 user accessible slot), 500 GB 7200 rpm Hard Drive; DVD+RW Optical Drive, Integrated 10/100/1000Mbps, Wireless LAN, 1 x USB 3.0 port, 4 x USB 2.0 ports, 1 x audio line-in, 1 x audio line-out, 1 x RJ-45 Ethernet port, 1 x HDMI port, 1 x VGA port 1 x mini PCI Express slot Windows 8 operating system, upgradable to the new Windows 10.