Apple All-in-One Apple iMac Core i3 Dual-Core 3.06GHz Bus Speed 2.50GT/s 4 MB Cache RAM 4GB 500GB SATA DVD Multiburner Local Area Network Capable Gigabit Enabled (1.00 Gbps) 802.11abgn Bluetooth Camera TFT LCD 21.5" Display 1920 x 1080 MacOS X 10.10 License Included - OS Installed U.S. English Silver on Black