2 Chapter 1Input DevicesT 88-/89-/93-key keyboard, with inverted "T" cursor layout; 2.5 mm (minimum) key travelT Seamless touchpad with 4-way scroll buttonT 12 function keys, four cursor keys, two Windows ® keys, hotkey controls, embedded numeric keypad,international language support, independent US and Euro dollar sign keys, media control keysT Empowering KeyT Easy-launch buttons: WLAN, Internet, email, Bluetooth, Acer Arcade™CommunicationT Acer Video Conference featuring:t Integrated Acer CrystalEye webcam supporting Acer PrimaLite ™ technologyt Acer PureZone technologyt Optional Acer Xpress VoIP phoneT WLAN: Intel PRO/Wireless 3945ABG (dual-band tri-mode 802.11a/b/g), or 3945BG (dual-mode802.11b/g) Wi-Fi CERTIFIED ® network connection, supporting Acer SignalUp ™ wireless technologyT WPAN: Bluetooth® 2.0+EDR (Enhanced Data Rate) (for selected models)T LAN: Gigabit Ethernet; Wake-on-LAN readyT Modem: 56K ITU V.92 with PTT approval; Wake-on-Ring readyI/O InterfaceT ExpressCard ™/54 slotT 5-in-1 card reader (SD ™/MMC/MS/MS PRO/xD)T Four USB 2.0 portsT IEEE 1394 portT External display (VGA) portT S-video/TV-out (NTSC/PAL) portT Headphones/speaker/line-out port with S/PDIF supportT Microphone-in jackT Line-in jackT Ethernet (RJ-45) portT Modem (RJ-11) portT DC-in jack for AC adapterPower SubsystemT ACPI 3.0 CPU power management standard: supports Standby and Hibernation power-saving modesT 44.4 W 4000 mAh Li-ion battery pack (6-cell)T 3-pin 90 W AC adapter supporting Acer QuicCharge ™ technology (for selected models):t 80% charge in 1 hourt 2-hour rapid charge system-offt 3-hour charge-in-useDimensions and weightT Width: 344 mm (13.5 inches)T Depth: 246 mm (9.7 inches)