The Apple Macbook Air MD223LL/A features an 11.6 inch widescreen TFT LED backlit active-matrix "glossy" display with 1366 by 768 native resolution. MD223LL/A is equipped with 64 GB of flash storage and an integrated Intel HD Graphics 4000 graphics processor that shares system memory. Connectivity includes Bluetooth 4.0, two USB 3.0 ports, 802.11a/b/g/n Wi-Fi, analog audio out, and a "Thunderbolt" port. This is a certified Refurbished product which has been tested to be in great working condition. Product may show signs of use and cosmetic blemishes. Specifications:• Enclosure: Highly recyclable aluminum unibody• Processor: dual-core Intel Core i5• L3 cache: 3MB shared• Memory: 4GB of 1600MHz DDR3L onboard memory (Configurable to 8GB)• Graphics: Intel HD Graphics 4000 processor• Video: 720p FaceTime HD camera, Dual display and video mirroring, Thunderbolt port with support for DVI, VGA, dual-link DVI, and HDMI (requires adapters, sold separately)• Display: 11.6-inch (diagonal) high-resolution LED-backlit glossy widescreen display• Expansion: One Thunderbolt port, Two USB 3 ports (up to 5 Gbps), SD card slot• Audio: Stereo speakers, omnidirectional microphone, Headphone port (Support for Apple Earphones with Remote and Mic)• Wireless: Wi-Fi (based on IEEE 802.11n specification); Bluetooth 4.0 wireless technology• Pre-Installed MacOS: X 10.7.4 (11E2520)• Maximum MacOS: Current*