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. GS35F-05925.
Contents
About this documentation . . . . . . . . iii
Chapter 1. Meet your computer. . . . . 1
Front . . . . . . . . . . . . . . . . . . . . 1
Base . . . . . . . . . . . . . . . . . . . . 2
Left . . . . . . . . . . . . . . . . . . . . 3
Right . . . . . . . . . . . . . . . . . . . . 5
Bottom . . . . . . . . . . . . . . . . . . . 7
Features and specifications . . . . . . . . . . . 8
Chapter 2. Get started with your
computer . . . . . . . . . . . . . . . . 11
Get started with Windows 10 . . . . . . . . . 11
Windows account . . . . . . . . . . . . 11
Windows user interface . . . . . . . . . . 12
Windows label . . . . . . . . . . . . . 13
Connect to networks. . . . . . . . . . . . . 13
Connect to the wired Ethernet . . . . . . . 13
Connect to Wi-Fi networks. . . . . . . . . 13
Connect to a cellular network. . . . . . . . 14
Use Lenovo Vantage . . . . . . . . . . . . . 14
Interact with your computer . . . . . . . . . . 15
Use the keyboard shortcuts . . . . . . . . 16
Use the TrackPoint pointing device . . . . . 17
Use the trackpad . . . . . . . . . . . . 19
Use the multi-touch screen . . . . . . . . 20
Use multimedia . . . . . . . . . . . . . . . 22
Use audio . . . . . . . . . . . . . . . 22
Use the camera . . . . . . . . . . . . . 22
Connect to an external display . . . . . . . 22
Get to know YOGA modes . . . . . . . . . . 24
Use ThinkPad Pen Pro . . . . . . . . . . . . 25
Chapter 3. Explore your computer . . 27
Manage power . . . . . . . . . . . . . . . 27
Check the battery status . . . . . . . . . 27
Charge the computer . . . . . . . . . . . 27
Check the battery temperature . . . . . . . 28
Maximize the battery life . . . . . . . . . 28
Set power button behaviors . . . . . . . . 28
Set the power plan . . . . . . . . . . . . 28
Transfer data . . . . . . . . . . . . . . . . 28
Set up a Bluetooth connection . . . . . . . 28
Set up a NFC connection (for selected
models) . . . . . . . . . . . . . . . . 29
Use a microSD card or a smart card . . . . . 29
Airplane mode . . . . . . . . . . . . . . . 30
Chapter 4. Accessories . . . . . . . . 31
Purchase options . . . . . . . . . . . . . . 31
Docking station . . . . . . . . . . . . . . . 31
Front view . . . . . . . . . . . . . . . 32
Rear view . . . . . . . . . . . . . . . 33
Attach a docking station. . . . . . . . . . 34
Detach a docking station . . . . . . . . . 35
Connect multiple external displays . . . . . 36
Chapter 5. Secure your computer
and information . . . . . . . . . . . . 37
Lock the computer . . . . . . . . . . . . . 37
Use passwords . . . . . . . . . . . . . . . 37
Password types . . . . . . . . . . . . . 37
Set, change, and remove a password . . . . 38
Use Power Loss Protection function (for selected
models) . . . . . . . . . . . . . . . . . . 39
Use the fingerprint reader . . . . . . . . . . . 39
Use face authentication (for selected models) . . . 40
Use firewalls and antivirus programs. . . . . . . 40
Chapter 6. Configure advanced
settings. . . . . . . . . . . . . . . . . 41
UEFI BIOS . . . . . . . . . . . . . . . . . 41
What is UEFI BIOS . . . . . . . . . . . . 41
Enter the BIOS menu . . . . . . . . . . . 41
Navigate in the BIOS interface . . . . . . . 41
Change the startup sequence . . . . . . . 41
Set the system date and time. . . . . . . . 42
Update UEFI BIOS . . . . . . . . . . . . 42
Recovery information . . . . . . . . . . . . 42
Restore system files and settings to an earlier
point . . . . . . . . . . . . . . . . . 42
Restore your files from a backup . . . . . . 42
Reset your computer . . . . . . . . . . . 42
Use advanced options . . . . . . . . . . 43
Windows automatic recovery. . . . . . . . 43
Create and use a recovery USB device . . . . 43
Install Windows 10 and drivers . . . . . . . . . 44
Chapter 7. CRU replacement . . . . . 47
What are CRUs . . . . . . . . . . . . . . . 47
Disable Fast Startup and the built-in battery. . . . 47
Emit infrared light. Normally the infrared light is invisible to the naked eyes.
1. Infrared (IR) LED*Note:Do not block the IR LED. Otherwise, the IR function might not work.
2. ThinkShutter
3. Camera with IR function*
4. MicrophonesCapture or record sound.
5. Camera
6. Multi-touch screen
Slide ThinkShutter to cover or uncover the camera lens. It is designed to protect your
privacy.
Log in to your computer with face authentication. See “Use face authentication (forselected models)” on page 40.
Take pictures or record videos by clicking Camera from the Start menu. The indicatornext to the camera is on when the camera is in use.
If you use other apps that support photographing, video chatting, and videoconference, the camera starts automatically when you enable the camera-requiredfeature from the app.
Enable you to use your computer with simple touch gestures. See “Use the multi-touch
screen” on page 20.
Log in to your computer with enrolled fingerprints. See “Use the fingerprint reader ” on
page 39.
Perform finger touch and all the functions of a traditional mouse. See “Use the
trackpad” on page 19.
Your computer supports NFC (near field communication). You can share information
with another NFC-enabled device. See “Set up a NFC connection (for selected
models)” on page 29.
Perform all the functions of a traditional mouse. See “Use the TrackPoint pointing
device” on page 17.
2
X390 Yoga User Guide
Left
1. USB-C™ connector (USB
3.1 Gen 1)
2. Thunderbolt
(USB-C)
™
3 connector
• Charge your computer.
• Charge USB-C compatible devices with the output voltage and current of 5 V and
1.5 A.
• Transfer data at USB 3.1 speed, up to 5 Gbps.
• Connect to an external display:
– USB-C to VGA: 1900 x 1200 pixels, 60 Hz
– USB-C to DP: 3840 x 2160 pixels, 60 Hz
• Connect to USB-C accessories to help expand your computer functionality. To
purchase USB-C accessories, go to
• Supply power to another computer using P-to-P (Peer to Peer) 2.0 charging
function. See “Use P-to-P 2.0 charging function” on page 27.
Note: When the battery power is below 10%, the connected USB-C accessories
might not work correctly.
• Charge your computer.
• Charge USB-C compatible devices with the output voltage and current of 5 V and
1.5 A.
• Transfer data at Thunderbolt 3 speed, up to 40 Gbps.
• Connect to an external display:
– USB-C to VGA: 1900 x 1200 pixels, 60 Hz
– USB-C to DP: 3840 x 2160 pixels, 60 Hz
• Connect to USB-C accessories to help expand your computer functionality. To
purchase USB-C accessories, go to
• Supply power to another computer using P-to-P (Peer to Peer) 2.0 charging
function. See “Use P-to-P 2.0 charging function” on page 27.
Note: When the battery power is below 10%, the connected USB-C accessories
might not work correctly.
https://www.lenovo.com/accessories.
https://www.lenovo.com/accessories.
Chapter 1. Meet your computer3
3. Ethernet extension
connector Gen 2
4. Docking-station
connector
Make your computer thinner than the ones with a standard Ethernet connector. Use a
ThinkPad Ethernet Extension Adapter Gen 2 to connect your computer to a local area
network (LAN) through this connector. The ThinkPad Ethernet Extension Adapter Gen 2
is available as an option and shipped with some computer models only. You can
purchase a ThinkPad Ethernet Extension Adapter Gen 2 from Lenovo at:
www.lenovo.com/accessories
Connect the computer to one of the following supported docks to extend the computer
capabilities:
• ThinkPad Basic Docking Station
• ThinkPad Pro Docking Station
• ThinkPad Ultra Docking Station
.
https://
5. Always On USB 3.1
connector Gen 1
6. Audio connector
7. Smart-card slot*Use smart cards for authentication, data storage, and application processing. Within
With the Always On USB feature enabled, the Always On USB 3.1 connector Gen 1 can
charge a USB-compatible device when the computer is on, off, in sleep mode, or in
hibernation mode.
Notes:
• By default, Always On USB is enabled and Charge in Battery Mode is disabled in
UEFI BIOS.
• When the computer is off or in hibernation mode, and Charge in Battery Mode is
disabled in UEFI BIOS, ensure that you have connected the computer to ac power.
To enable the Always On USB feature, do the following:
1. Enter the UEFI BIOS menu. See “Enter the BIOS menu” on page 41.
2. Click Config ➙ USB ➙ Always On USB to enable the Always On USB feature.
Connect headphones or a headset with a 3.5-mm (0.14-inch) and 4-pole plug to listen
to the sound from the computer.
Note: The conventional microphone is not supported.
large organizations, you might also use smart cards for strong security authentication
of single sign-on (SSO). See “Use a microSD card or a smart card ” on page 29.
* for selected models
4
X390 Yoga User Guide
Right
1. ThinkPad Pen Pro
2. Power button
3. microSD card slot
4. Nano-SIM card slot*
5. USB 3.1 connector Gen 1
6. HDMI™ connector
7. Security-lock slot
See “Use ThinkPad Pen Pro ” on page 25.
Press to turn on the computer or put the computer to sleep mode.
To turn off the computer, open the Start menu, click
down.
The indicator in the power button shows the system status of your computer.
• Blinking for three times: The computer is initially connected to power.
• On: The computer is on.
• Off: The computer is off or in hibernation mode.
• Blinking rapidly: The computer is entering sleep or hibernation mode.
• Blinking slowly: The computer is in sleep mode.
Insert a microSD card for data access or storage. See “Use a microSD card or a smart
card ” on page 29.
Use the Nano Subscriber Identity Module (SIM) card to connect to a wireless-WANnetwork. See “Connect to a cellular network” on page 14.
Connect a USB-compatible device, such as a USB keyboard, USB mouse, USB
storage device, or USB printer.
Connect to a compatible digital audio device or video monitor, such as an HDTV.
Lock your computer to a desk, table, or other fixtures through a compatible security
cable lock. See “Lock the computer” on page 37.
Power, and then select Shut
* for selected models
Chapter 1. Meet your computer5
6X390 Yoga User Guide
Bottom
1. Docking-station hook
holes
2. Emergency-reset hole
3. Speakers
Use the docking-station hook holes to secure a supported docking station.
If the computer stops responding and you cannot turn it off by pressing the power
button, reset your computer:
1. Disconnect your computer from ac power.
2. Insert a straightened paper clip into the hole to cut off power supply temporarily.
3. Connect your computer to ac power and then turn on your computer.
Enable you to experience high-quality sound.
Chapter 1. Meet your computer7
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