KEFEYA S1 User manual
LAPTOP SCREEN EXTENDER
Warm tips:
1. Please ensure Type-C data cable is connected well with device interface.
2. This product supports whole function of Type-C (charging and video),
integrated one line. If screen cannot be powered on or restarted,please
supply external power of 5V, 2A.
3. The PD interface used to connect the product must use the HDMI TO
TYPE-C data cable in the package and be externally powered.
Ｓｅｒｖｉｃｅ＠ｋｅｆｅｙａ．ｃｏｍ
USER GUIDE
KEFEYA S1
Product Introduction
S1 is a plug-and-play, versatile external, portable folding single-screen laptop splitter. It allows
for the quick setup of a personal mobile workstation. It provides a perfect solution for laptop users
to have multi-screen mirroring or extended display, significantly boosting work efficiency by up to
50% and enabling efficient multitasking. Additionally, it supports screen mirroring on select
smartphones such as Samsung and Huawei, as well as the use of the smartphone's built-in desktop
mode and audio-video transmission capabilities.
The S1 product stand is designed for easy use. It can be clipped onto the top of the laptop screen,
providing a secure and non-slip attachment. It supports laptop shells ranging from 13 inches to 17.3
inches, catering to professionals, white-collar workers, gamers, stock traders, entrepreneurs,
programmers, and students, offering them a unique and enjoyable experience.
Each screen of S1 allows adjustment of brightness, sound, contrast and other parameters
independently, and is equipped with MINI HDMI/Type-C interface, saving the need of any docking
stations. As long as it is a signal + power supply two-in-one TPYE-C laptop, connected display can
be realized with one cable. The desktop host/laptop/mini PC/ set-top box/game console and other
devices with HDMI output interface can be directly connected to the display, but the screen needs
external power supply to light up (Type-C mobile phone charging cable can be used).
Finally, S1 screen splitter can provide a complete 180 degree rotation on a single screen. You can
choose your best view angle for the optimum visual experience.
Contents Of Instruction
Product Attributes
1. Product host
2. Accessories
3. Parameters
Installation and Storage
1. Installation and Storage
2. Stretch the frame
3. Adjust the kickstand
4. Expanded Direction
5. Storing your monitor
Key Definitions
Connection
1. Connect S1 with Laptop
2. Device power supply connection mode
Audio Settings
1. Change sound settings of Windows 10 / Windows 11
2. Change sound settings of MAC OS PC
Display Mode
1. Windows 10 / Windows 11 Display Settings and Configuration
2. MacOS 13 Ventura Display Settings and Configuration
Transportation, Storage and Safety Information
1
1
1
2
2
2
3
3
3
4
5
6
7
8
9
10
Product Attributes
HOST USB-A to USB-C USB-C to USB-C HDMI to TYPE-C
2. Accessories
1. Product host
3. Parameters
353x207x23mm
Weight: Screen Size:
Panel Type:
Average Brightness:
Type-C Input:
Type-C Output:
Ports:
1.06 Kg
16:9
60hz
1920x1080 P
Aspect Ratio:
Size:
Refresh Rate:
Resolution:
Speaker:
14 Inches
IPS Wide Viewing Angle
5V-20V / 5A Max
5V-20V / 4.25A Max
Type-C x31
1
300CD/M2
BAG
Multi-function Button
TYPE-C
TYPE-C
TYPE-C
(for video only)
Speaker
Kickstand
Installation and Storage
1. Expand the monitor
2. Stretch the frame
3. Adjust the kickstand
*NOTE: Please follow the direction to expand the monitor to avoid damage.
2
TIGHT
TIGHT
LOOSE
Open
Installation and Storage
4. Expanded Direction
5. Closing Sequence
*NOTE: Please follow the sequence of opening and closing to avoid damage.
3
Key Definitions
Toggle Left "Minus"
Backlight Adjustment Button
Toggle Right "Plus”
Volume Adjustment Button
Menu/Selection/Confirmation Button
Press and hold for 2 seconds to return. Press and hold for 3 seconds to shut down
Fold the top buckle
When folding the screen, be sure to pull out the bracket to the proper size as
shown in the picture to secure the screen in the silicone of the bracket. Otherwise,
forcing it closed will damage the screen!
1. Connect S1 with Laptop
4
How to Connect
It requires 1 full-featured USB-C port or 1 HDMI port plus 1 USB-A port on your laptop.
Notice: If the display has no signal or the signal is unstable after connection, please connect an
external 5V/2A power adapter to power the laptop.
HDMI & USB-A Connection:
If your laptop has USB-A and one HDMI port, please use the USB-A to USB-C cable and HDMI to
Type-C cable to connect the S1.
TYPE-C Connection :
If your laptop has a full-featured Type-C port, you can connect the S1 directly to your
laptop with one Type-C cable.
2. Connect S1 with Mobile Phone and Other Devices
Connection Mode
5
Mobile phone
(External power supply required)
Switch
(External power supply required)
Audio Settings
6
S1
1. Change sound settings of Windows 10 / Windows 11
1.1 Right click the Speaker ICON in task bar.
1.2 Select "switch on sound " in pop-up dialog box
1.3 Left click "turn on sound settings" and pop-up the box as provided,Here users can set about sound;
Here users can set about sound
1. Master volume;
2. Select output device: ( S1 / Speaker );
3. Device attributes.
Sound
Sound
output
System
Some apps can be set to use a different sound device than the one selected here.
Please customize the app volume and device in advanced sound selection.
Select output device
Device attribues
master volume
？
Audio Settings
7
2. Change sound settings of MAC OS PC
2.1. Choose Apple menu > System Settings
2.2. Click "Output", then select the device you want to use in the list of sound
output devices：( S1 / Speaker )
8
Display Mode
1.2 Under the "Rearrange yours displays" section, drag and drop each display to rearrange it according to
its physical layout on your desktop. Scroll down to the bottom of the page to further configure the display
for extended or mirrored mode.
1.1 Right-click a blank area of the desktop. Select 'Display Settings' from the pop-up dialogue box.
Left-click "Display Settings" to open the settings dialogue box, as shown.
Night light can help you get to sleep
Select a display below to change the settings for it. Press and hold (or select) a display,
then drag to rearrange it.
1. Windows 10 / Windows 11 Display Settings
Display Mode
9
2.1 Enter the “System Preferences” menu
2.2 Configure your monitor
2.3 Arrange Displays
To rearrange displays, drag them to the desired position.
To mirror displays, hold Option key while dragging them on top of each other.
To relocate the menu bar, drag it to a different display.
In this menu, you can set the resolution and mirror//extend the display you want.
2. MacOS 13 Ventura Display Settings
Transportation, Storage And Safety Information
10
In order to ensure the normal use of this product and prevent accidents such as electric shock or fire,
please read and understand all usage requirements and operating procedures before use.
Please strictly abide by the following requirements.
1. Please tear off the protective film on the screen surface before use.
2. The DC power supply required by this product is AC/DC power adapter, which should be far away
from heat source and placed in a well ventilated place. The AC power socket and AC power cord
should be well grounded and can withstand enough current demand.
3. The DC power input required by this product is 5V-20V ± 2V.
4. To prevent circuit corrosion and malfunction, avoid excessive humidity and dust .
5. Screen surface should not be challenged by external force.
6. Do not use sharp tools to touch the screen surface.
7. This product fits general business and domestic use, and ambient temperature ranging from
-20~60°C is recommended.
8. Please turn off the power source when not in use.
Contact Us
For any support you need, feel free to contact us via email at
We always here to help and will offer solutions within 24hrs.
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