661-5733 Apple Macbook Air 13" Late 2010 1.86ghz Intel Laptop Motherboard, A1369, 2gb Ram, 820-2838-a, Mc503ll/a, 21pj3mb01d0 661-5733 Apple Macbook Air 13" Late 2010 1.86GHz Intel Laptop Motherboard, A1369, 2GB RAM, 820-2838-A, MC503LL/A, 21PJ3MB01D0