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To set up a second monitor, connect it to power and to a compatible video port on your computer or dock, then choose whether to extend or mirror the screen in your operating system’s display settings. Arrange the on-screen display icons to match your desk. The cable, adapter, dock, number of screens, and supported resolution depend on your specific computer and monitor.
Before you connect the monitor
Check the available video ports on both the computer and monitor, then choose a cable that fits both. If the connectors do not match, a compatible adapter or dock may work, but connector shape alone does not confirm that a computer supports the display configuration you want. Check the specifications for your exact computer model before buying or relying on an adapter or dock.
Power the monitor and connect the video cable to the computer or a compatible dock. Seat both ends securely and turn the monitor on. A basic splitter duplicates one video signal; it does not create two independent extended displays.
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Set up a second monitor in Windows 11 or Windows 10
- Connect and power on the monitor. If you are using a dock, connect the display to the dock and the dock to the computer.
- Open Start > Settings > System > Display. Windows shows numbered icons for displays it detects. Select Identify to show each screen’s number. Microsoft’s Windows display setup guide covers these display settings.
- To choose how the screens work, press Windows+P and select Extend for separate desktop space on each screen, or Duplicate to show the same content on both. PC screen only and Second screen only are the other choices.
- In Display settings, drag the numbered display icons to match the monitors’ physical positions, then select Apply. Move the pointer across the boundary to check that it passes to the screen you expect. Select a display to adjust its resolution or scale; start with the recommended resolution.
If Windows does not detect the monitor
- In Settings > System > Display, expand Multiple displays and select Detect.
- Check that the monitor is powered on and that the cable is firmly seated at both ends. If you are using a dock, dongle, adapter, or other accessory, disconnect accessories and test a simpler connection or one display at a time; accessories can cause conflicts.
- Confirm that the cable, adapter, or dock is compatible with the computer and monitor. If you are trying to connect wirelessly, use Connect under Multiple displays; Windows+K opens Cast for a wireless display adapter.
- If your computer has only one video output, a compatible docking station or USB adapter may add display outputs. Check the computer manufacturer’s compatibility information and graphics-adapter limits first. A splitter will mirror the signal rather than provide independent extended screens.
Set up a second monitor on a Mac
- Connect the monitor to power, then connect its video cable to the Mac. HDMI and Thunderbolt are examples of ports used for external displays. If the cable requires a port the Mac lacks, Apple says a compatible adapter may work; a cable with a suitable connector is another option. See Apple’s guide to connecting a display to a Mac.
- The Mac should detect a correctly powered and connected display automatically. Open Apple menu > System Settings > Displays to configure it.
- In Displays, choose whether to extend or mirror using Use as, where that option is available. Use the arrangement controls to position the screens and select the primary display if needed. The options shown vary by Mac and connected display.
- Start with the default or recommended resolution. Depending on the Mac and display, Displays may also offer refresh-rate settings. Adjust these only as needed.
If macOS does not detect the monitor
- Open Apple menu > System Settings > Displays. Hold Option to reveal Detect Displays, then select it.
- Check that the display is on, both cable ends are secure, and the cable and any adapter suit the ports. Unplug and reconnect the display; if needed, put the Mac to sleep and wake it.
- Check the specifications for your exact Mac model and the monitor’s documentation. Apple notes that the number of simultaneous external displays a Mac supports depends on the model and the resolution and refresh rate in use. See Apple’s external-display support information.
Choose the right display mode and connection
| Choice | What it does | Best when |
|---|---|---|
| Extend | Creates separate desktop space across the screens. | You want to place different windows on each monitor. |
| Duplicate or mirror | Shows the same content on both screens. | You want both displays to show the same image. |
| Direct cable | Connects a matching computer port to a matching monitor port. | The computer and monitor have compatible ports and support the desired display mode. |
| Adapter or dock | Provides a connection path when ports differ or additional outputs are needed. | The specific computer, adapter or dock, and monitor support the intended displays and settings. |
For an extended setup, also arrange the display icons to match where the screens sit on your desk. This determines where the pointer crosses from one display to another; the primary display setting determines where the main desktop elements appear.
#1 Best Overall
Sale
MNN 15.6" FHD 60Hz Portable Monitor USB-C HDMI IPS HDR Gaming Laptop
- Full HD Portable Monitor - MNN 15.6inch portable laptop monitor with 1920*1080 resolution, advanced IPS glossy screen support 178° full viewing angle, it renders accurate and bright color, draws you into the video or game with lifelike colors and amazing detail.It can effectively reduce blue light radiation damage, no flickering, eye-care, and make it easier to watch for a long time.A second monitor for working from home.
- Double Type-C Port -For Plug & Play, the MNN monitor provides 2 Full Feature Type-C ports. Only One USB Type-C Cable is required to connect to the power supply & display signal transmission. NOTE: Your device should support thunderbolt 3.0 or USB 3.1 Type C DP ALT-MODE.which supports multiple connect ways to your laptops, PC, Phones, Macbooks, PS5/PS4, Xbox, and Switch.
- Lightweight Ultra Slim for Travel - As a portable external monitor,MNN portable laptop monitor easily accommodate to every suitcase and backpack and stress-free when you are holding it for a long time. They are truly portable computer monitors for travelers, students, gamers,engineers, and everyone.
- Give consideration to work and games - through multiple display modes [Copy Mode/Extended Mode/Second Screen Mode/Portrait Mode], we can bring you a clear second screen in the meeting, and expand the screen anytime and anywhere to improve work efficiency and improve the quality of life. Adjusting to HDR mode can upgrade the image to a new level, providing you with brighter highlights,deeper and more realistic colors, more realistic images, and amazing viewing/gaming experience.
- Powerful Smart Cover - MNN portable external monitor can work in both landscape and portrait mode, can be used as a gaming monitor, screen extender for laptop or phone. Comes with a scratch-proof smart cover made of durable PU leather exterior, doubles as a stand, provides comprehensive protection for this portable computer monitor.
Windows 10 support status
Microsoft’s Windows setup instructions cover both Windows 11 and Windows 10. Separately, Microsoft Support says: “After October 14, 2025, Microsoft will no longer provide free software updates from Windows Update, technical assistance, or security fixes for Windows 10.” That end-of-support date does not itself prevent monitor setup from working.
Quick Recap
Bestseller No. 2
Best Value
Sale
cocopar Portable Monitor 15.6 Inch 1080P FHD 60Hz 85% sRGB Travel Monitor with Speaker HDMI USB-C Second Screen for Laptop MacBook Surface PC Xbox PS4/5, VESA Mountable, with Cover Stand
- Portable Monitor for Laptops: Cocopar laptop screen extender is the ideal portable monitor for Macbook, Surface Pro, Surface Laptop, Lenovo Laptop, HP Laptop, Dell Laptop, ASUS Laptop, etc. This second monitor for laptop supports Extend and Mirror Mode, bringing you efficiency for meetings, work from home, and presentations
- Plug and Play USB-C Monitor: Cocopar portable laptop monitor provides 2 Full-featured USB-C ports and a HDMI port, is compatible with most laptops, PC, PS4, and Xbox. Only One single USB-C Cable is required for both power supply and display and supports power pass-through reverse charging. NOTE: Your device should support thunderbolt 3.0/4.0 or USB 3.1 Type C DP ALT-MODE
- FHD Portable Monitor VESA Mountable: Featuring a 1080P resolution, 60 HZ, 85% color gamut, 178° FULL viewing angle, HDR, and Low Blue Light Super Clear IPS A-grade screen, this Cocopar 15.6 inch portable screen for laptop with two VESA holes can be easily and stably mounted on a stand for landscape and vertical mode for high productivity
- Portable and Light Weight: Cocopar travel monitor for laptop is the ideal companion for all your business trips and home office. Measures only 4mm (0.2 inches) at the slimmest point and 1.5 lb without the magnetic cover (2.4 lb with cover). Coming with a Smart Stand Case, this travel monitor is well-protected and flexible to use anywhere you need a second screen for laptop
- Your Go-To Screen Anywhere: Perfect for remote work, business trips, virtual meetings, gaming, and content creation. Cocopar delivers flexible dual-screen convenience wherever you are.
Rank #4
KYY Portable Monitor 15.6" 1080P Computer Monitor Screen Extender w/Cover
- [ FHD 1080P PORTABLE MONITOR ]: KYY using a 15.6''(8.8"x14.2") advanced IPS screen with 178° wide viewing angle, Delivers 1920*1080 breathtaking viewing quality and HDR technology, KYY portable gaming monitor has excellent color rendering ability, provide you the clearer, smooth, excellent performance in gaming/multimedia. It can effectively reduce blue light radiation damage, no flickering, eye-care, and make it easier to watch for a long time
- [ WIDE COMPATIBILITY ]: KYY portable monitor for laptop equipped with 2 Full Function Type-C ports and Mini-HDMI port, easy access to your favorite devices with 1 cable solution as long as your device support Thunderbolt 3 or 3.1 USB-Type-C, compatible with most laptop, smartphone, PC, PS4, XBOX and more.
- [ ULTRA-SLIM PORTABLE DISPLAY ]: KYY USB C portable monitor features a 0.3inch ultra-slim profile(1.7lb), it is easy to slides into your bag, allows you to carry it everywhere, ideal for a simple on-the-go dual-monitor setup or extend your phone screen for movies or games. No driver needed and equipped with 3.5mm audio inputs and 2 built-in stereo speakers to enhance entertainment experience
- [ DURABLE SMART COVER ]: Comes with a scratch-proof smart cover made of durable PU leather exterior, doubles as a stand, provides comprehensive protection and frameless magnetic design for this portable computer monitor. There are two grooves in the cover base to give at least some choice of viewing angle for your comfort for less cumbersome installation
- [ LIGHTWEIGHT BUT POWERFUL ]: KYY portable external monitor can work in both landscape and portrait mode, can be used as a gaming monitor, screen extender for laptop or phone. It has a unique designed Premium gray metal appearance, 2 built-in speakers to play audio, a friendly menu control wheel for setting, and 24/7 professional support team
Rank #3
InnoView Portable Monitor, 15.6 Inch FHD 1080P HDMI USB C Second External Monitor for Laptop, Desktop, MacBook, Phones, Tablet, PS5/4, Xbox, Switch, Built-in Speaker with Protective Case
- [Portable Monitor Laptop] InnoView laptop screen extender is no need of app and drivers! 15.6 in is a more suitable size for traveling or remote work. Suitable for traveler, student, gamer, engineer, and white-collar worker to connect HP laptop, Lenovo laptop, Dell laptop, Asus laptop, Macbook, iPhone, game console, tablet, PS, Xbox, etc. The laptop screen can expand the viewing area and be more efficient when playing games, working, meeting and studying
- [Plug and Play] The travel monitor for laptop provides 2 full-function Type-C ports and 1 HDMI port to connect most devices. Only one USB-C cable is needed to connect the external display to computer, and it supports power pass-through reverse charging. Note: Your device should support Thunderbolt 3.0/4.0 or USB 3.1 Type-C DP ALT-MODE. If not, you can connect via HDMI and power cable(NOT INCLUDE IN THE PACKAGE)
- [IPS FHD USB C Monitor] 15.6 inch portable screen with a resolution of 1920*1080P, made of A+ IPS screen, supports 178° full viewing angle, can present accurate and vivid colors. Combined with HDR, images and videos present realistic colors and amazing details. Low blue light can effectively reduce blue light radiation damage, no flicker, eye protection, making it easier for you to work and perform multiple tasks at the same time
- [Versatile Cover and Stand] Equipped with a scratch-resistant smart protective cover made of durable PU leather, it can also be used as a stand when working. Two grooves are used to adjust the angle and fix the external monitor. It can also provide all-round protection for the 1080p monitor when going out or traveling, suitable for putting in a backpack to avoid squeezing. Optional landscape and portrait modes, save more desktop space
- [Worry-free Purchase] Since the output power of each device is different, the screen may flicker or restart. You can power the laptop monitor to solve it. Provide a 30-day return policy and 18-month warranty (excluding external force damage). If you have any concerns, please let us know (displayed on the back of the monitor)
Rank #2
Anyuse 15.6" FHD IPS USB-C HDMI Portable Monitor
- 15.6" FHD Portable Monitor - Featuring a 1920*1080P resolution, 178°FULL viewing angle, HDR, and Low Blue Light Super Clear IPS A-grade screen, this Anyuse portable screen for laptop enhanced visual experience, reduces eye strain and fatigue.
- Double Type-C Port -For Plug & Play - Anyuse portable monitor features 2 full-featured Type-C ports and 1 MINI HDMI port. You can easily access your favorite devices with just one USB Type-C or MINI HDMI cable. NOTE: Your device should support Thunderbolt 3.0/4.0 or USB 3.1 Type C DP ALT-MODE.
- Portable & Light Weight - At just 1.37lbs and 0.04 inch thin, this portable laptop monitor is ultra-portable and perfect for on-the-go productivity or gaming. flexible to use anywhere you need a second screen for laptop. bringing you efficiency for meetings, work from home, and presentations.
- Able to Balance Work and Play - With multiple display modes [copy mode/extension mode/second screen mode]. During meetings,it can copy your laptop's content as a second screen to share with others.At work, it can be used as a second extended screen to increase productivity. In life, adjusting to HDR mode can upgrade the image to a new level, providing you with brighter highlights, more realistic colors and images.Two built-in speakers provide an amazing viewing and gaming experience.
- Wide Compatibility - Enjoy hassle-free plug-and-play functionality with the portable monitor. it is compatible with all devices equipped with HDMI and USB Type-C ports like laptops, PS, XBOX, SWITCH game consoles, No app or driver installation required.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
