The 21.5 Apple iMac is powered by a dual core 3.06 GHz Intel "Core i3" I3-540 processor with a dedicated 256k level 2 cache for each core and a 4 MB shared level 3 cache. This iMac is configured with 4 GB of RAM (1333 MHz PC3-10600 DDR3 SDRAM)・ a 500 GB (7200 RPM) hard drive・ a vertically-mounted slot-loading DVD+R DL "SuperDrive"・ and ATI Radeon HD 4670 graphics with 256 MB of dedicated GDDR3 memory.<br /><br />Connectivity includes four USB 2.0 ports・ a Firewire "800" port・ built-in AirPort Extreme・ and Gigabit Ethernet・ as well as an audio capable Mini DisplayPort・ which supports an external display up to 30" (2560x1600). It also has a built-in iSight video camera and built-in stereo speakers underneath the 21.5" glossy 16:9 LED-backlit TFT Active Matrix LCD (1920x1080 native) display "with IPS technology".<br /><br /><br />Hard Drive: 500GB Serial ATA (7200 RPM)<br />Standard RAM: 4GB of DDR3 SDRAM (PC3-10600)<br />Processor Speed: 3.06GHz<br />Processor Type: Core i3 (I3-540)<br />Video Card: Radeon HD 4670<br />Native Resolution: 1920x1080<br />Built-in Display: 21.5" 16:9 Widescreen<br />Standard AirPort: 802.11a/b/g/n<br />Standard Bluetooth: 2.1+EDR<br />USB Ports: 4 (2.0)<br />Apple Order No: MC508LL/A<br />Dimensions: 17.75 x 20.8 x 7.42<br />Mac OS: Upgraded to 10.12 Sierra<br /><br />Retail A Grade condition<br />Warranty: 90 Day Distributor Warranty<br /><br />This item includes a New 3rd Party Keyboard and Mouse<br /><br />This product h