Mid 2012 to present. Apple sells this same model A1278, at its retail stores with i5 2.5 mHz, 500GB drive, 4GB RAM for $1100 plus $70 tax.This is A1278 with the boosted i7 - 2.9 MHz, 750GB drive with 8GB RAM. This is a $1500 computer for a little over half price.Covered under Applecare warranty till July 4, 2015. MacBook internal CD ROM was swapped for 750GB drive, making this a great computer for DJ, photographer, creative student, or anyone that needs lots of storage ability internally available on their laptop. Twin 750GB drives give you 1.5 TB of storage on this machine.Thunderbolt, firewire, ethernet, 2 USB3 ports, WiFi 802n, SD slot, camera are standard on this model. Installed, OWC drive tray would make it easy to install a SSD solid state drive and still have a 750 drive to have a very fast 2.9 - i7 power house. Comes with Original box & power supply. The drives will be clean formatted with OS X Yosemite 10.10.3. I can supply serial # to confirm applecare on apple.com.