(Connections and expansion). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MagSafe power port Gigabit Ethernet port FireWire 800 port (up to 800 Mbps) Two USB 2.0 ports (up to 480 Mbps) Thunderbolt port (up to 10 Gbps) Audio line in Audio line out SDXC card slot Kensington lock slot (Display). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15.4-inch (diagonal) LED-backlit glossy or optional antiglare widescreen display with support for millions of colors (Audio). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Stereo speakers with subwoofers Omnidirectional microphone (located under left speaker grille) Audio line in minijack (digital/analog) Audio line out/headphone minijack (digital/analog) Support for Apple iPhone headset with microphone (Communications). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Wi-Fi wireless networking2 (based on IEEE 802.11n specification); IEEE 802.11a/b/g compatible Bluetooth 2.1 + EDR (Enhanced Data Rate) wireless technology 10/100/1000BASE-T Gigabit Ethernet (RJ-45 connector) (Battery and power). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . up to 7 hrs wireless web Built-in 77.5-watt-hour lithium-polymer battery 85W MagSafe Power Adapter with cable management system MagSafe power port