Apple MacBook Pro A1278 13" 2010 Core 2 Duo. It has an Apple HDD with 500 GB storage. I am not certain, but I think that it has 4 GB RAM and the 2.40 GHz processor. <div><br></div><div>I have erased the hard drive and installed Mountain Lion OS. To avoid entering information, I have not upgraded the OS, but you can upgrade to High Sierra.</div><div><br></div><div>The battery does not hold a charge for long, but it works fine when the power cable, which is included, is attached.</div><div><br></div><div>Ships promptly and securely by USPS Priority Mail.</div>