Size and weightHeight: 1.08 inch (2.75 cm) Width: 12.78 inches (32.5 cm) Depth: 8.92 inches (22.7 cm) Weight: 5.0 pounds (2.27 kg)1 Connections and expansionMagSafe power port Gigabit Ethernet port Mini-DVI port FireWire 400 port (up to 400 Mbps) Two USB 2.0 ports (up to 480 Mbps) Audio line in Audio line out Kensington cable lock slot CommunicationsBuilt-in AirPort Extreme Wi-Fi wireless networki