MacBook air 13-inch mid 2012. Upgraded the hard drive to new 512 SSD hard drive. 4MB of RAM. Running MacOS X High Sierra. I notice that the "S" keyboard had an issue with registering. It works, but it may need to be cleaned. I'm selling "As Is" buy now, pay now listing. Asking 100 bucks plus shipping. The exterior has some minor wear and tear nothing crazy. I have  protective cover that will go with the computer. The mag safe adapter and plug come with the laptop too. If you have any questions, feel free to send me a message.