6.If you have audio devices, attach them using the following instructions. For more information about speakers, see steps 7 and 8.

1 Audio line-in

This connector receives audio signals from an external audio device,

 

such as a stereo system.

2 Audio line-out

This connector sends audio signals from the computer to external

 

devices, such as powered stereo speakers.

3 Microphone

Use this connector to attach a microphone to your computer when

 

you want to record sound or if you use speech-recognition software.

4 Headphone

Use this connector to attach headphones to your computer when you

 

want to listen to music or other sounds without disturbing anyone.

 

This connector might be located on the front of the computer.

7.If you have powered speakers with an ac adapter, use the following instructions.

a.Connect the cable that runs between the speakers, if necessary. On some speakers, this cable is permanently attached.

b.Connect the ac adapter cable to the speaker.

c.Connect the speakers to the computer.

d.Connect the ac adapter to the ac power source.

8.If you have unpowered speakers with no ac adapter, use the following instructions.

a.Connect the cable that runs between the speakers, if necessary. On some speakers, this cable is permanently attached.

6User Guide

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Lenovo 9638, 9643, 9644, 9645, 9640, TC A55-9636 manual User Guide

TC A55-9636, 9640, 9645, 9644, 9643 specifications

Lenovo has consistently been at the forefront of innovation in the computing world, with a range of laptops and desktops that cater to a variety of needs and preferences. Among their popular offerings are the Lenovo 9640, 9643, TC A55-9636, 9644, and 9645. Each of these models is designed to provide exceptional performance, reliability, and user-friendly experience, making them appealing choices for both personal and business use.

The Lenovo 9640 is renowned for its sleek design and powerful performance. This model is equipped with the latest Intel processors, ensuring smooth multitasking and efficient power consumption. It features a vibrant display that provides excellent color accuracy and vivid visuals, making it ideal for content creators and casual users alike. With ample storage options and high-speed SSD configurations, users can expect fast boot times and quick file access.

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The TC A55-9636 is Lenovo's entry into the compact desktop market, designed for users seeking a powerful, space-saving solution. With its robust performance metrics and energy-efficient components, the A55-9636 is perfect for both home and office environments. It supports a variety of multitasking scenarios, making it suitable for productivity-driven tasks, while its expandable architecture means users can upgrade components as their needs evolve.

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All models in this series showcase Lenovo's commitment to sustainability, incorporating eco-friendly materials and energy-efficient technologies. The user-friendly interfaces across the devices ensure a seamless experience, meeting the demands of a broad user base from students to business executives. In summary, the Lenovo 9640, 9643, TC A55-9636, 9644, and 9645 represent a versatile range of computing solutions that combine cutting-edge technology with efficiency, ensuring users can achieve their goals effectively and stylishly.