Upgrading non-upgradable RAM inside a mid-2009 MacBook Air to a specification that Apple never sold. This little guy is now perfectly happy running in 4GB 1067MHz DDR3 RAM instead of a measly
4 gb 1067 mhz ddr3 | Newegg.com
8GB 2x 4GB PC3-8500 1066 1067 MHz Memory RAM for APPLE MACBOOK PRO iMac MAC mini | eBay