apple imac 21 5 inch 3 1ghz core i3 late 2011 mc978ll a macofalltrades
this model was originally available for sale to educational institutions apple part number mc978ll a hardware configuration 21 5 inch led backlit glossy widescreen tft lcd display with ips 1920x1080 resolution 3 1ghz intel core i3 processor 4 0gb 2x2 0gb pc3 10600 1333mhz ddr3 so dimm supports up to 8 0gb 250gb serial ata hard disk drive 7200rpm dvd rw cd rw superdrive dl amd radeon hd 6750m graphics with 256mb gddr5 memory airport extreme wireless card 802 11a b g n no bluetooth built in facetime hd camera 1 mini displayport 4 usb 2 0 ports 1 firewire 800 port 1 ethernet port 1 secure digital sdxc slot