Lenovo ThinkPad T420 (English) User Guide - Page 21
Productivity Center program for Windows XP and Windows Vista, Productivity Center program. - microphone
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If your computer stops responding, and you cannot turn it off, press and hold the power switch for 4 seconds or more. If the system is still not reset, remove the ac power adapter and the battery. 3 Fingerprint reader Some models have a fingerprint reader. The fingerprint authentication technology enables you to use your fingerprint to start the computer and enter the ThinkPad Setup. For details, refer to the instructions in "Using a fingerprint reader" on page 97. UltraNav® 4 TrackPoint buttons 5 TrackPoint pointing stick 17 Touch pad 18 Touch pad buttons The keyboard contains the unique TrackPoint® pointing device. Pointing, selecting, and dragging are all part of 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. 6 ThinkVantage button Press the ThinkVantage button to launch the SimpleTap program (for Windows® 7) or the ThinkVantage Productivity Center program (for Windows XP and Windows Vista®). Note: Depending on the date when your computer was manufactured, your computer might have the Lenovo ThinkVantage Toolbox program preinstalled instead of the SimpleTap program or the ThinkVantage Productivity Center program. You also can use the ThinkVantage button to interrupt the startup sequence of your computer and start the Rescue and Recovery® workspace. For more information, see "ThinkVantage button" on page 27. 7 System and power-status indicators Your computer has the system status indicators and the power status indicators. For the detailed information about the location and meaning of each indicator, see "System-status indicators" on page 11 and "Power-status indicators" on page 12. 8 UltraConnect™ wireless antennas (left) 13 UltraConnect wireless antennas (right) The built-in antennas for the wireless communication are located at the top left and the top right portions of your computer display. For the specific locations of each antenna, refer to "Location of the UltraConnect wireless antennas" on page 238. 9 Built-in microphone (left) 12 Built-in microphone (right) The built-in microphone captures sound and voice when it is used with an application program capable of handling audio. Chapter 1. Product Overview 3