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Note: For products with mercury-containing fluorescent lamps (for example, non-LED), the fluorescent lamp in the liquid crystal display (LCD) contains mercury; dispose of according to local, state, or federal laws. xii User Guide Using headphones or earphones CAUTION: Excessive sound pressure from earphones and headphones can cause hearing loss. Adjustment of the equalizer to maximum increases the earphone and headphone output voltage and the sound pressure level. Therefore, to protect your hearing, adjust the equalizer to an appropriate level. Excessive use of headphones or earphones for a long period of time at high volume can be dangerous if the output of the headphone or earphone connectors do not comply with specifications of EN 50332-2. The headphone output connector of your computer complies with EN 50332-2 Sub clause 7. This specification limits the computer’s maximum wide band true RMS output voltage to 150 mV. To help protect against hearing loss, ensure that the headphones or earphones you use also comply with EN 50332-2 (Clause 7 limits) for a wide band characteristic voltage of 75 mV. Using headphones that do not comply with EN 50332-2 can be dangerous due to excessive sound pressure levels. If your Lenovo computer came with headphones or earphones in the package, as a set, the combination of the headphones or earphones and the computer already complies with the specifications of EN 50332-1. If different headphones or earphones are used, ensure that they comply with EN 50332-1 (Clause 6.5 Limitation Values). Using headphones that do not comply with EN 50332-1 can be dangerous due to excessive sound pressure levels. Additional safety information DANGER Plastic bags can be dangerous. Keep plastic bags away from babies and children to avoid danger of suffocation. Notice for tablet personal computer users Safety notice for users in Australia DANGER Do not connect phone line while using tablet mode. Notice for users in the U.S.A. Many personal computer products and accessories contain cords, cables or wires, such as power cords or cords to connect the accessory to a personal computer. If this product has such a cord, cable or wire, then the following warning applies: WARNING: Handling the cord on this product or cords associated with accessories sold with this product will expose you to lead, a chemical known to the State of California to cause cancer, and birth defects or other reproductive harm. Wash hands after handling. Save these instructions. © Copyright Lenovo 2013 xiv User Guide Chapter 1. Product overview This chapter provides information about the locations of connectors, locations of important product labels, computer features, specifications, operating environment, and preinstalled programs. This chapter contains the following topics: • “Locating computer controls, connectors, and indicators” on page 1 • “Locating important product information” on page 8 • “Features” on page 10 • “Specifications” on page 11 • “Operating environment” on page 12 • “Lenovo programs” on page 12 Locating computer controls, connectors, and indicators This section introduces the computer hardware features to give you the basic information you will need to start using the computer. Front view Figure 1. Front view 1 Integrated camera 6 Fingerprint reader 2 Built-in microphones 7 System status indicator (illuminated ThinkPad® logo) 3 Fan louvers 8 TrackPoint® pointing stick 4 Power button 9 Touch pad 5 Numeric keypad © Copyright Lenovo 2013 11 Integrated camera Use the camera to take pictures or hold a video conference. For details, see “Using the integrated camera” on page 32. 2 Built-in microphones The built-in microphones capture sound and voice when used with an application program capable of handling audio. 3 Fan louvers The fan louvers and internal fan enable air to circulate in the computer and ensure proper cooling, especially the cooling of the microprocessor. Notes: • The fan louvers are located behind the hinge. • To ensure proper airflow, do not place any obstacles in front of the fan louvers. 4 Power button Use the power button to turn on the computer. To turn off the computer, use the Start menu shutdown option on the Microsoft ® Windows® 7 operating system. For the Microsoft Windows 8 operating system, move the pointer to the bottom right corner of the screen to bring up the charms. Then click Settings . Power . Shut down. If your computer stops responding and you cannot turn it off, press and hold the power button for four seconds or more. If the computer still is not responding, remove the ac power adapter and reset the computer by inserting a needle or a straightened paper clip into the emergency reset hole to turn off the computer. To locate the emergency reset hole, see “Bottom view” on page 6. You also can program the power button so that by pressing the power button you can shut down the computer or put it into sleep or hibernation mode. To achieve this, you need to change your power plan set...