2 Built-in microphone (right)12 Built-in microphone (left)The built-in microphone captures sound and voice when it is used with an application program capableof handling audio.3 Power switchUse the power switch to turn on the computer. To turn off your computer, use the Start menu shutdownoptions.If you cannot turn off the computer by this method, press and hold the power switch for 2 seconds.If your computer stops responding, and you cannot turn it off, press and hold the power switch for 4 secondsor more. If the system is still not reset, remove the ac power adapter and the battery.The power switch also can be programmed through Power Manager to shut down the computer or put it intosleep (standby) or hibernation.4 PCI Express Mini Card slot for wireless WAN or mSATA solid state drive (SSD)Your computer might include a PCI Express Mini Card in the PCI Express Mini Card slot which enableswireless WAN communications.With Lenovo technologies advancing to provide you with the best engineered systems, some models areequipped with an mSATA solid state drive for data storage.5 PCI Express Mini Card slot for wireless LAN/WiMAXYour computer might include a PCI Express Mini Card in the PCI Express Mini Card slot which enableswireless LAN/WiMAX communications.6 Color sensorThe color sensor allows you to measure and adjust the color accuracy of your displays. For details, refer tothe instructions in “Color Sensor Utility” on page 25.7 Memory-upgrade slotYou can increase the amount of memory in your computer by installing a memory module in the memorybay. Memory modules are available as options.Note: If your computer is a dual-core processor model, two Dummy DIMM cards are preinstalled and donot replace the Dummy DIMM cards with SO-DIMMs. For details, refer to the instructions in “Increasing orreplacing memory (W520)” on page 139.UltraNav®8 TrackPoint® buttons9 TrackPoint pointing stick21 Touch pad22 Touch pad buttonsThe keyboard contains the unique TrackPoint pointing device. Pointing, selecting, and dragging are all partof a single process that you can perform without moving your fingers from typing position.Move your fingertip across the UltraNav touch pad to move the pointer.The TrackPoint and touch pad buttons provide functions similar to those of a mouse and its buttons.Chapter 1. Product Overview 3
