The Apple MacBook Air "Core 2 Duo" 2.13 13-inch (Mid-2009) runs on a 2.13 GHz Intel "Core 2 Duo" processor (SL9600), which incorporates two independent processor "cores" on a single chip, a 6 MB on-chip shared level 2 cache, and a 1066 MHz frontside bus.
It is equipped with 2 GB of non-upgradable 1066 MHz DDR3 SDRAM, a 128 GB SSD (Solid-State Drive), and an NVIDIA GeForce 9400M graphics processor sharing 256 MB of DDR3 SDRAM with main memory. Additional features include a built-in iSight video camera, a full-size backlit keyboard with an ambient light sensor, and a 13.3" widescreen TFT LED-backlit active-matrix "glossy" display with a native resolution of 1280x800. All components are housed in a slim (0.16-0.76 inch), three-pound aluminum case.
Connectivity consists of AirPort Extreme (802.11a/b/g/n), Bluetooth 2.1+EDR, a single USB 2.0 port, analog audio out, and a Mini DisplayPort that supports an external 30" display. It lacks internal Ethernet (an external adapter is provided) and also omits Firewire and optical audio in/out.
The MacBook Air "Core 2 Duo" 2.13 13" (Mid-2009) utilizes the same chassis as earlier MacBook Air models, featuring a 13.3" display, a full-size keyboard, and a single-button, "three-finger" trackpad. Internally, it also forgoes an optical drive, includes a battery not intended for user replacement, and its memory cannot be expanded beyond the onboard 2 GB.
However, compared to the "NVIDIA/Late 2008" MacBook Air series, the "Mid-2009" models deliver superior battery life (5 hours versus 4.5 hours), include the Apple 10/100Base-T Ethernet adapter as standard, and were introduced at significantly lower price points. This particular model is also marginally faster.