Lenovo S345-14AST User Manual

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Lenovo Chromebook S345-14AST

User Guide

First Edition (May 2019)

LIMITED AND RESTRICTED RIGHTS NOTICE: If data or software is delivered pursuant to a General Services Administration “GSA” contract, use, reproduction, or disclosure is subject to restrictions set forth in Contract No. GS- 35F-05925.

Contents

About this documentation . . . . . . . . v

Chapter 1. Important safety

information . . . . . . . . . . . . . . . . 1

Read this first. . . . . . . . . . . . . . . .	.	1
Conditions that require immediate action . . . . .	.	1
Service and upgrades . . . . . . . . . . . .	.	2
Power cords and power adapters . . . . . . . .	.	3
Plugs and outlets . . . . . . . . . . . . . .	.	4
Power supply statement . . . . . . . . . . .	.	4
Electrical current safety information . . . . . . .	.	5
Non-rechargeable coin-cell battery notice . . . .	.	6
Built-in rechargeable battery notice . . . . . . .	.	6
Removable rechargeable battery notice . . . . .	.	6
Heat and product ventilation . . . . . . . . . .	.	7
Liquid crystal display (LCD) notice . . . . . . .	.	7
Extension cords and related devices. . . . . . .	.	8
Using headphones or earphones . . . . . . . .	.	8
Plastic bag notice . . . . . . . . . . . . . .	.	8
Glass parts notice . . . . . . . . . . . . . .	.	8
Safety instructions for teachers, parents and adult
supervisors . . . . . . . . . . . . . . . .	.	8

Chapter 2. Meet your

Chromebook . . . . . . . . . . . . . . 11

Front view . . . . . . . . . . . . . . . . .	11
Microphones . . . . . . . . . . . . . .	11
Camera light . . . . . . . . . . . . . .	11
Camera . . . . . . . . . . . . . . . .	12
Screen . . . . . . . . . . . . . . . .	12
Power key . . . . . . . . . . . . . . .	12
Keyboard . . . . . . . . . . . . . . .	12
Touchpad . . . . . . . . . . . . . . .	12
Wireless antennas . . . . . . . . . . . .	12
Left view . . . . . . . . . . . . . . . . .	13
dc-in / USB-C connector . . . . . . . . .	13
dc-in light . . . . . . . . . . . . . . .	13
USB 3.0 (Type-A) connector . . . . . . . .	14
Combo audio connector . . . . . . . . .	14
microSD card slot . . . . . . . . . . . .	14
Right view . . . . . . . . . . . . . . . . .	15
USB 3.0 (Type-A) connector . . . . . . . .	15
USB-C connector . . . . . . . . . . . .	15
Security-lock slot . . . . . . . . . . . .	15
Bottom view . . . . . . . . . . . . . . . .	17
Features and specifications . . . . . . . . . .	18
Operating environment . . . . . . . . . . . .	20

Chapter 3. Get started with your Chromebook . . . . . . . . . . . . . . 21

Charge your Chromebook . . . . . . . . . . .	21
User interface . . . . . . . . . . . . . . .	22
Connect to Wi-Fi . . . . . . . . . . . . . .	22
Connect to Bluetooth devices . . . . . . . . .	22
Set the power plan . . . . . . . . . . . . .	23

Chapter 4. Navigate the screen . . . .	25
Use the multi-touch screen . . . . . . . . . .	25
Use the special keys . . . . . . . . . . . . .	26
Use the touchpad . . . . . . . . . . . . . .	26

Chapter 5. Use multimedia . . . . . .	29
Use the camera . . . . . . . . . . . . . . .	29
Use audio . . . . . . . . . . . . . . . . .	29
Connect to an external display . . . . . . . . .	29
Chapter 6. Account, login, and
logout . . . . . . . . . . . . . . . . .	31
Types of user account for logging into Chrome . .	31
Become your Chromebook’s owner . . . . . . .	31
Sign in with another Google account . . . . . .	32
Browse as a guest . . . . . . . . . . . . . .	32
Create a supervised account. . . . . . . . . .	32
Lock your Chromebook. . . . . . . . . . . .	33
Sign out . . . . . . . . . . . . . . . . . .	33
Give other Google Accounts permission to use
your Chromebook . . . . . . . . . . . . . .	33
Check a Chromebook’s owner . . . . . . . . .	34
Disable guest browsing mode . . . . . . . . .	34
Reset your Chromebook . . . . . . . . . . .	34
Shut down your Chromebook . . . . . . . . .	34
Get help from Google . . . . . . . . . . . .	34

Chapter 7. Manage files and

folders . . . . . . . . . . . . . . . . . 35

What is Google Drive . . . . . . . . . . . . .	35
Your local storage space . . . . . . . . . . .	35
Files app . . . . . . . . . . . . . . . . .	35
Create folders using the Files app . . . . . . . .	35
Delete unused files . . . . . . . . . . . . .	35
Check the amount of available storage . . . . . .	36

Chapter 8. Language settings. . . . .	37
Change display language . . . . . . . . . . .	37
Add an input method. . . . . . . . . . . . .	37
Switch among input methods . . . . . . . . .	37

iii

Chapter 9. Add and manage apps. . . 39

What is Chrome Web Store . . . . . . . . . .	39
Add apps or extensions. . . . . . . . . . . .	39
Install Android apps . . . . . . . . . . . . .	39
Pin apps to shelf . . . . . . . . . . . . . .	40
Pin Web pages to shelf . . . . . . . . . . . .	40

Chapter 10. Accessibility, ergonomic, and maintenance

information . . . . . . . . . . . . . . . 41

Accessibility and comfort . . . . . . . . . . . 41 Ergonomic information . . . . . . . . . . 41

Basic maintenance tips . . . . . . . . . . . .	42
Cleaning your computer . . . . . . . . . . .	42

Appendix A. Compliance

information . . . . . . . . . . . . . . . 45

Appendix B. Lenovo help and

support . . . . . . . . . . . . . . . . . 57

Appendix C. Lenovo Limited

Warranty . . . . . . . . . . . . . . . . 59

Trademarks . . . . . . . . . . . . . . . . lxvii

iv Lenovo Chromebook S345-14AST User Guide

About this documentation

•Illustrations in this documentation might look different from your product.

•Depending on the model, some optional accessories, features, and software programs might not be available on your computer.

•Documentation content is subject to change without notice. Lenovo makes constant improvement on the

documentation of your computer, including this User Guide To get the latest documentation, go to https://	.
support.lenovo.com.

vi Lenovo Chromebook S345-14AST User Guide

Chapter 1. Important safety information

Read this first

This information can help you safely use your personal computer. Follow and retain all information included
with your computer. The information in this document does not alter the terms of your purchase agreement
or the Lenovo Limited Warranty	.
Customer safety is important. Our products are developed to be safe and effective. However, personal
computers are electronic devices. Power cords, power adapters, and other features can create potential
safety risks that can result in physical injury or property damage, especially if misused. To reduce these risks,
follow the instructions included with your product, observe all warnings on the product and in the operating
instructions, and review the information included in this document carefully. By carefully following the
information contained in this document and provided with your product, you can help protect yourself from
hazards and create a safer computer work environment.
Note: This information includes references to power adapters and batteries. In addition to notebook
computers, some products (such as speakers and monitors) ship with external power adapters. If you have
such a product, this information applies to your product. In addition, computer products contain a coin-sized
internal battery that provides power to the system clock even when the computer is unplugged, so the
battery safety information applies to all computer products.

Conditions that require immediate action

Products can become damaged due to misuse or neglect. Some product damage is serious enough that the product should not be used again until it has been inspected and, if necessary, repaired by an authorized servicer.

As with any electronic device, pay close attention to the product when it is turned on. On very rare occasions, you might notice an odor or see a puff of smoke or sparks vent from your product. Or you might hear sounds like popping, cracking, or hissing. These conditions might merely mean that an internal electronic component has failed in a safe and controlled manner. Or, they might indicate a potential safety issue. However, do not take risks or attempt to diagnose the situation yourself. Contact the Customer Support Center for further guidance. For a list of Service and Support phone numbers, go to http:// www.lenovo.com/support/phone.

Frequently inspect your computer and its components for damage or wear or signs of danger. If you have any question about the condition of a component, do not use the product. Contact the Customer Support Center or the product manufacturer for instructions on how to inspect the product and have it repaired, if necessary.

In the unlikely event that you notice any of the following conditions, or if you have any safety concerns with your product, stop using the product and unplug it from the power source and telecommunication lines until you can speak to the Customer Support Center for further guidance.

•Power cords, plugs, power adapters, extension cords, surge protectors, or power supplies that are cracked, broken, or damaged.

•Signs of overheating, smoke, sparks, or fire.

•Damage to a battery (such as cracks, dents, or creases), discharge from a battery, or a buildup of foreign substances on the battery.

•A cracking, hissing, or popping sound, or strong odor that comes from the product.

•Signs that liquid has been spilled or an object has fallen onto the computer product, the power cord, or power adapter.

•The computer product, power cord, or power adapter has been exposed to water.

•The product has been dropped or damaged in any way.

•The product does not operate normally when you follow the operating instructions.

Note: If you notice these conditions with a product (such as an extension cord) that is not manufactured for or by Lenovo, stop using that product until you can contact the product manufacturer for further instructions, or until you get a suitable replacement.

Service and upgrades

Do not attempt to service a product yourself unless instructed to do so by the Customer Support Center or your documentation. Only use a Service Provider who is approved to repair your particular product.

Note: Some computer parts can be upgraded or replaced by the customer. Upgrades typically are referred to as options. Replacement parts approved for customer installation are referred to as Customer Replaceable Units, or CRUs. Lenovo provides documentation with instructions when it is appropriate for customers to install options or replace CRUs. You must closely follow all instructions when installing or replacing parts. The Off state of a power indicator does not necessarily mean that voltage levels inside a product are zero. Before you remove the covers from a product equipped with a power cord, always make sure that the power is turned off and that the product is unplugged from any power source. If you have any questions or concerns, contact the Customer Support Center.

Although there are no moving parts in your computer after the power cord has been disconnected, the following warnings are required for your safety.

CAUTION:

Hazardous moving parts. Keep fingers and other body parts away.

CAUTION:

Before you open the computer cover, turn off the computer and wait several minutes until the computer is cool.

2 Lenovo Chromebook S345-14AST User Guide

Power cords and power adapters

DANGER

Use only the power cords and power adapters supplied by the product manufacturer.

The power cords shall be safety approved. For Germany, it shall be H05VV-F, 3G, 0.75 mm2, or better. For other countries, the suitable types shall be used accordingly.

Never wrap a power cord around a power adapter or other object. Doing so can stress the cord in ways that can cause the cord to fray, crack, or crimp. This can present a safety hazard.

Always route power cords so that they will not be walked on, tripped over, or pinched by objects.

Protect power cords and power adapters from liquids. For instance, do not leave your power cord or power adapter near sinks, tubs, toilets, or on floors that are cleaned with liquid cleansers. Liquids can cause a short circuit, particularly if the power cord or power adapter has been stressed by misuse. Liquids also can cause gradual corrosion of power cord terminals and/or the connector terminals on a power adapter, which can eventually result in overheating.

Ensure that all power cord connectors are securely and completely plugged into receptacles.

Do not use any power adapter that shows corrosion at the ac input pins or shows signs of overheating (such as deformed plastic) at the ac input pins or anywhere on the power adapter.

Do not use any power cords where the electrical contacts on either end show signs of corrosion or overheating or where the power cord appears to have been damaged in any way.

To prevent possible overheating, do not cover the power adapter with clothing or other objects when the power adapter is plugged into an electrical outlet.

Chapter 1. Important safety information 3

Plugs and outlets

DANGER

If a receptacle (power outlet) that you intend to use with your computer equipment appears to be damaged or corroded, do not use the outlet until it is replaced by a qualified electrician.

Do not bend or modify the plug. If the plug is damaged, contact the manufacturer to obtain a replacement.

Do not share an electrical outlet with other home or commercial appliances that draw large amounts of electricity; otherwise, unstable voltage might damage your computer, data, or attached devices.

Some products are equipped with a three-pronged plug. This plug fits only into a grounded electrical outlet. This is a safety feature. Do not defeat this safety feature by trying to insert it into a non-grounded outlet. If you cannot insert the plug into the outlet, contact an electrician for an approved outlet adapter or to replace the outlet with one that enables this safety feature. Never overload an electrical outlet. The overall system load should not exceed 80 percent of the branch circuit rating. Consult an electrician for more information if you have questions about power loads and branch circuit ratings.

Be sure that the power outlet you are using is properly wired, easily accessible, and located close to the equipment. Do not fully extend power cords in a way that will stress the cords.

Be sure that the power outlet provides the correct voltage and current for the product you are installing.

Carefully connect and disconnect the equipment from the electrical outlet.

Power supply statement

DANGER

Never remove the cover on a power supply or any part that has the following label attached.

Hazardous voltage, current, and energy levels are present inside any component that has this label attached. There are no serviceable parts inside these components. If you suspect a problem with one of these parts, contact a service technician.

4 Lenovo Chromebook S345-14AST User Guide

Electrical current safety information

DANGER

Electric current from power, telephone, and communication cables is hazardous. To avoid a shock hazard:

•Do not use your computer during a lightning storm.

•Do not connect or disconnect any cables or perform installation, maintenance, or reconfiguration of this product during an electrical storm.

•Connect all power cords to a properly wired and grounded electrical outlet.

•Connect to properly wired outlets any equipment that will be attached to this product.

•Whenever possible, use one hand only to connect or disconnect signal cables.

•Never turn on any equipment when there is evidence of fire, water, or structural damage.

•Disconnect the attached power cords, battery pack, and all the cables before you open the device covers, unless instructed otherwise in the installation and configuration procedures.

•Do not use your computer until all internal parts enclosures are fastened into place. Never use the computer when internal parts and circuits are exposed.

DANGER

Connect and disconnect cables as described in the following procedures when installing, moving, or opening covers on this product or attached devices.

To connect:

1.Turn everything OFF.

2.First, attach all cables to devices.

3.Attach signal cables to connectors.

4.Attach power cords to outlets.

5.Turn devices ON.

To disconnect:

1.Turn everything OFF.

2.First, remove power cords from outlets.

3.Remove signal cables from connectors.

4.Remove all cables from devices.

The power cord must be disconnected from the wall outlet or receptacle before installing all other electrical cables connected to the computer.

The power cord may be reconnected to the wall outlet or receptacle only after all other electrical cables have been connected to the computer.

Chapter 1. Important safety information 5

DANGER

During electrical storms, do not perform any replacement and do not connect the telephone cable to or disconnect it from the telephone outlet on the wall.

Non-rechargeable coin-cell battery notice

DANGER

If the coin-cell battery is incorrectly replaced, there is danger of an explosion. The battery contains a small amount of harmful substance.

Do not heat to more than 100 °C (212 °F).

The following statement applies to users in the state of California, U.S.A.

Products containing manganese dioxide lithium coin-cell batteries may contain perchlorate. Perchlorate Material - special handling may apply, see https://www.dtsc.ca.gov/hazardouswaste/ perchlorate.

Built-in rechargeable battery notice

DANGER

Do not attempt to replace the built-in rechargeable battery. Replacement of the battery must be done by a Lenovo-authorized repair facility or technician.

Only recharge the battery strictly according to instructions included in the product documentation.

Removable rechargeable battery notice

DANGER

Only recharge the battery strictly according to instructions included in the product documentation.

If the battery is incorrectly replaced, there is danger of an explosion. The battery contains a small amount of harmful substances.

6 Lenovo Chromebook S345-14AST User Guide

Heat and product ventilation

DANGER

Computers, ac power adapters, and many accessories can generate heat when turned on and when batteries are charging. Notebook computers can generate a significant amount of heat due to their compact size. Always follow these basic precautions:

•When your computer is turned on or the battery is charging, the base, the palm rest, and some other parts may become hot. Avoid keeping your hands, your lap, or any other part of your body in contact with a hot section of the computer for any extended length of time. When you use the keyboard, avoid keeping your palms on the palm rest for a prolonged period of time. Your computer generates some heat during normal operation. The amount of heat depends on the amount of system activity and the battery charge level. Extended contact with your body, even through clothing, could cause discomfort or even a skin burn. Periodically take breaks from using the keyboard by lifting your hands from the palm rest; and be careful not to use the keyboard for any extended length of time.

•Do not operate your computer or charge the battery near flammable materials or in explosive environments.

•Ventilation slots, fans and/or heat sinks are provided with the product for safety, comfort, and reliable operation. These features might inadvertently become blocked by placing the product on a bed, sofa, carpet, or other flexible surface. Never block, cover, or disable these features.

•When the ac power adapter is connected to an electrical outlet and your computer, it generates heat. Do not place the adapter in contact with any part of your body while using it. Never use the ac power adapter to warm your body. Extended contact with your body, even through clothing, may cause a skin burn.

For your safety, always follow these basic precautions with your computer:

•Keep the cover closed whenever the computer is plugged in.

•Regularly inspect the outside of the computer for dust accumulation.

•Remove dust from vents and any perforations in the bezel. More frequent cleaning might be required for computers in dusty or high-traffic areas.

•Do not restrict or block any ventilation openings.

•Do not operate your computer inside furniture, as this might increase the risk of overheating.

•Airflow temperatures into the computer should not exceed 35°C (95°F).

Liquid crystal display (LCD) notice

CAUTION:

The liquid crystal display (LCD) is made of glass and rough handling or dropping the computer can cause the LCD to break. If the LCD breaks and the internal fluid gets into your eyes or on your hands, immediately wash the affected areas with water for at least 15 minutes; if any symptoms are present after washing, get medical care.

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.

Chapter 1. Important safety information 7

Extension cords and related devices

Ensure that extension cords, surge protectors, uninterruptible power supplies, and power strips that you use are rated to handle the electrical requirements of the product. Never overload these devices. If power strips are used, the load should not exceed the power strip input rating. Consult an electrician for more information if you have questions about power loads, power requirements, and input ratings.

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.

Plastic bag notice

DANGER

Plastic bags can be dangerous. Keep plastic bags away from babies and children to avoid danger of suffocation.

Glass parts notice

CAUTION:

Some parts of your product may be made of glass. This glass could break if the product is dropped on a hard surface or receives a substantial impact. If glass breaks, do not touch or attempt to remove it. Stop using your product until the glass is replaced by trained service personnel.

Safety instructions for teachers, parents and adult supervisors

This Chromebook computer is intended for use as a child development tool primarily by children, 6 years of age or above. There must be supervision by an adult. It is a must to have a thorough explanation to children on safe and proper handling of the computer, battery pack, and ac power adapter.

8 Lenovo Chromebook S345-14AST User Guide

DANGER

Warning: Chocking Hazard - Small parts. Not suitable for children under age 3.

•For ITE with power supplies not intended to be handled by children: As with all electrical products, precautions should be observed handling and use to prevent electric shock. The ac power adapter should not be handled by children.

•The computer should not be placed on the bare skin (lap) of the child for long periods. The computer should be placed on a flat surface, like desktop, if your child intends to use it for more than a few minutes.

•The computer (including the ac power adapter and the battery pack, as applicable) should not be left in the rain or subjected to exposure to water. If cleaning is necessary do not immerse it in water; wipe clean with damp cloth.

•The computer (including the ac power adapter and the battery pack, as applicable) should not be dropped, crushed (stepped on) or otherwise abused.

•An adult should caution his or her child about the potential trip hazard as posed by the cable between a power source and the computer. An adult should inspect the computer (including the ac power adapter and the battery pack, as applicable) periodically for damage. Similarly, if a child notices damaged/broken parts, this should be reported to the teacher/parents/adult supervisors immediately. Damaged parts may be replaced through service provided by Lenovo.

DANGER

ELECTRICALLY OPERATED PRODUCT. Not recommended for children under 3 years of age (or other intended age range). As with all electrical products, precautions should be observed during handling and use of electrical products to reduce the risk of electric shock.

Chapter 1. Important safety information 9

10 Lenovo Chromebook S345-14AST User Guide

Chapter 2. Meet your Chromebook

Front view

1 2 3 1

1. Microphones	2.	Camera light
3. Camera	4. Screen
5. Power key	6. Keyboard
7. Touchpad	8.	Wireless antennas (invisible from the outside)

Microphones

The built-in microphones can be used for voice recording, audio communication, or videoconferencing.

Camera light

The light is on when the camera is in use.

Camera

The built-in camera can be used for video calling or videoconferencing.

Note: The light next to the camera indicates whether it is in use.

Screen

The screen displays text, graphics, and videos.

Notes:

•Selected models support multi-touch function. You can use your finger for interaction with the computer. For details about the multi-touch function, see “Use the multi-touch screen” on page 25.

•The screen can be rotated up to 180 degrees. Do not rotate the screen with too much force, or apply too much force to the upper-right or upper-left corner of the screen. Otherwise, the screen or hinges might get damaged.

Power key

When you open the LCD cover, the computer starts automatically. If it does not start, press the power key. The power key also can be used to put the computer to sleep mode or wake up the computer.

Keyboard

Your Chromebook keyboard works just like a conventional keyboard but with a few special shortcut keys for quick access to certain settings. In addition to the special shortcut keys, Chromebook also supports shortcut keys using the ctrl alt or shift key. , ,

Note: For details about shortcut keys, see “Use the special keys” on page 26.

Touchpad

The touchpad supports the single-click function. Move your finger on the touchpad to move the cursor, and tap or click on the touchpad to start apps.

Note: For details about how to use the touchpad, see “Use the touchpad” on page 26.

Wireless antennas

If your computer includes a radio transmitter, wireless antennas are built into the computer for sending and receiving radio. The antennas are not visible from the outside of the computer.

12 Lenovo Chromebook S345-14AST User Guide

Left view

1	2	3	4	5
1. dc-in / USB-C connector				2. dc-in light
3. USB 3.0 (Type-A) connector				4. Combo audio connector
5. microSD card slot

dc-in / USB-C connector

Plug in the included ac power adapter to charge the internal battery and provide power to the Chromebook.

Note: While not used by the ac power adapter, the connector can also be used to connect external devices with a USB-C plug.

dc-in light

The dc-in light shows the power and battery status of your computer.

Table 1. dc-in light status and the corresponding power and battery status

Light status	Power status
on (red)	plugged in
on (amber)	plugged in
on (green)	plugged in
off	unplugged

Battery status

•being charged

•remaining power less than 2%

•being charged

•remaining power between 2% and 100%

have being fully charged for more than 5 minutes

discharging

Chapter 2. Meet your Chromebook 13

USB 3.0 (Type-A) connector

The USB 3.0 (Type-A) connector is used for connecting external devices. It is compatible with USB 3.0 (Type-A) plugs.

Combo audio connector

The combo audio connector supports headphones or headsets with a 3.5 mm TRRS plug. It does not support standalone microphones nor headsets with a separate plug for microphone.

microSD card slot

Insert a microSD card here to expand the Chromebook’s local storage capacity.

Insert a microSD card

Step 1. Insert a microSD card into the slot and gently push it until it touches the end.

Note: Make sure the metal contacts of the microSD card are facing downwards when inserting it into the slot.

Step 2. Firmly push in the card until you hear a “click” sound.

Note: When properly inserted, the entire body of the microSD card should be located in the slot and is not easily moved.

Remove a microSD card

Do not remove a microSD card until the data transfer between the computer and the microSD card has finished.

Step 1. On the left pane of the Files app, click the eject button (next to SD Card

Step 2. Firmly push in the card until you hear a “click” sound.

Step 3. Slowly remove the card from your Chromebook.

14 Lenovo Chromebook S345-14AST User Guide

Right view

	1	2	3
1. USB 3.0 (Type-A) connector	2. USB-C connector
3. Security-lock slot

USB 3.0 (Type-A) connector

The USB 3.0 (Type-A) connector is used for connecting external devices. It is compatible with USB 3.0 (Type-A) plugs.

USB-C connector

This connector can be used as follows.

•Charge your computer.

•Charge USB-C compatible devices with the output voltage and current of 5 V and 3 A.

•Transfer data at USB 3.0 speed, up to 5 Gbps.

•Connect to an external display.

–USB-C to VGA: 1900 × 1200 pixels, 60 Hz

–USB-C to DP: 3840 × 2160 pixels, 30 Hz

•Connect to USB-C accessories to expand computer functionality. To purchase USB-C accessories, go to https://www.lenovo.com/accessories.

Note: When the battery power is below 10%, the connected USB-C accessories might not work correctly.

Security-lock slot

Lock your computer to a desk, table, or other fixtures through a compatible security cable lock.

Chapter 2. Meet your Chromebook 15

Note: You are responsible for evaluating, selecting, and implementing the locking device and security feature. Lenovo makes no comments, judgments, or warranties about the function, quality, or performance of the locking device and security feature. Cable locks for your product are available from Lenovo at https:// www.lenovoquickpick.com.

16 Lenovo Chromebook S345-14AST User Guide

Bottom view

1. Ventilation slots (inlet)	Maintain the incoming airflow to dissipate internal
	heat.
2. Speakers	Produce sound.

Chapter 2. Meet your Chromebook 17

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