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Something you should know before you buy
Macbook Pro/Air with M1/M2 chips is not directly compatible with the triple screen extender. You will need an H5 Video Signal conversion cable(driver needed) to make all screens work at the same time.

Connection Method 
Basic Troubleshooting Steps:
If your laptop can only activate one screen or fail to display on both screens simultaneously, please make sure that your ports meet the following requirements: 2x Full-Featured Type-C or 1x Type-C+HDMI.
If you still encounter issues, please contact our service team.



【High-quality Screen】CIDETTY portable monitor features a 14-inch FHD 1080P IPS screen that delivers excellent color rendering and provides a bright and high-quality viewing experience. The screen is equipped with blue light filtering and anti-glare technology, ensuring eye protection and a more comfortable viewing experience, even during prolonged use.
【Broad Compatibility】CIDETTY laptop screen extender is plug-and-play. It is compatible with Windows, macOS, Linux, and works with Laptops, PS, Xbox, and Switch. Please note that it is not compatible with Macbook with M1, M2, or M3 chips or Surface devices with only one Type-C port. If you encounter any connection issues, please contact our customer service for assistance.
【Ultra-slim Portable Display】CIDETTY USB-C monitor features built-in speakers and has a screen thickness of only 0.24 inches. It comes with a dedicated protective case for easy portability, making it ideal for dual monitor setups during travel or work on-the-go, as well as for extending phone screens for watching movies.
【Triple Screen】CIDETTY portable laptop monitor is equipped with two USB Type-C ports and one HDMI to USB-C port. It can be easily connected and provides both mirror and extended display experiences. It can expand the screen space by up to two times, making multitasking easier with multiple display modes. It allows you to create a personal mobile workstation anytime, anywhere, and can increase work efficiency by up to 200%.
【Guarantee & Package】 CIDETTY dual screen laptop has gift package! High quality materials with QC. FCC, CE, RoHS certified.Each pack includes 1 screen, 2*Type-C cable, 1 HDMI to USB-C cable, 2*USB-A to USB-C power supply cable, 1 protective case, 1 NewbieQuick Guide, 1 instruction.
【Important Note】There are some laptop models doesn’t fully compatible with this laptop screen extender. Normally, laptop with two full-featured Type C port or one full-featured Type C port and one HDMI port should work well with the product. If you not sure your laptop’s compatibility or you have any question about the product, feel free to contact us and our service team will provide you the best solution to solve your problem.
9 reviews for Laptop Screen Extender, 14” FHD 1080P IPS Ultra-Thin Dual/Triple Monitor Display, HDMI/USB-C Plug-Play Portable Monitor for Laptop, Built-in Speakers(Mac, Win, Android)
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$28.99

The build quality and grip is very good, and at a reasonable price. –
Perfect Portable Monitor – Easy to Use, Great Display, Super Portable!
I absolutely love this portable laptop screen extender! From the moment I unboxed it, I was impressed with how lightweight and compact it is—perfect for traveling or working remotely. The setup was incredibly easy; it was basically plug-and-play with no complicated installation or software needed. I had it connected and running in under two minutes!The display quality is fantastic—crisp resolution, vibrant colors, and smooth performance. It’s made multitasking so much easier, whether I’m working on documents, editing photos, or attending virtual meetings. I didn’t expect such a sharp and bright screen from something this compact and lightweight.If you’re looking for a second screen that’s portable, high quality, and hassle-free, this is the one. It has totally upgraded my work setup. Highly recommend!
Fausto E. –
Efficient, Lightweight and Reliable Portable Monitor !
I bought this CIDETTY 14″ extender to stop juggling multiple browser windows while working from coffee shops and it’s been a game-changer. The 14″ FHD 1080p IPS screen gives surprisingly crisp text and colors for the price, and the built-in blue-light filter/anti-glare helps during long spreadsheet sessions (my eyes are noticeably less tired). Setup was plug-and-play — I used one USB-C and the HDMI adapter the first day and it just worked. The monitor has two Type-C inputs plus an HDMI→USB-C option, which made hooking it up to my laptop and later to a Switch effortless. It’s ultra-thin (about 0.24″) and comes with a padded case and all the cables you need, so it’s easy to toss in my backpack for travel. Sound from the tiny built-in speakers is better than I expected for conference calls (don’t expect booming bass, but they’re perfectly fine for Zoom and quick YouTube clips)After a couple weeks of daily use (email + browser tabs + occasional light photo edits) I’m impressed with how much more productive I feel — being able to drag reference docs to the extender while I work on the main screen is actual time-saver. For the price and the portability, this was a solid buy and I’d recommend it to remote workers, students, or anyone who needs an inexpensive second screen on the go.
Colleen M –
Great portable monitors
Great portable monitor! I work from home, and this has really boosted my productivity — I’m more organized and able to stay on task. Setup was seamless, and the screen is sharp with vibrant colors. It’s slim and fits perfectly in my bag. Comes with a handy carrying case and all the cables you need. Highly recommend!
Azuma –
Great Portable Monitor
This screen extender is surprisingly light and very easy to connect. The display looks sharp, and the colors are clean and bright. It works smoothly with my laptop and makes multitasking much more comfortable. Great value for portable productivity.
Kim U. –
Great product
I love this product! The screens are clear and easy to hook onto my 14″ laptop screen. I travel once a week for work and it’s great for setting up a virtual workspace. I’ve also been using this while at home to eliminate the need for a big, bulky monitor on my desk.The only small downside is that there are so many cords required to work both screens simultaneously – a USB-C, a USB, and HDMI. It takes up all of my ports in my laptop in order to work both screens.
moose –
Simple and large screen
This laptop screen extender portable monitor is incredibly useful for work and travel. The picture quality is sharp and bright, making multitasking so much easier. It’s lightweight and folds neatly, so I can carry it in my laptop bag without trouble. Setup was quick—just plug it in and it works right away. Perfect for productivity on the go, whether for meetings or working from home. Definitely a five-star gadget for anyone needing extra screen space.
Nicole Sublet –
Recommend almost perfect.
I really like this device. I work fully remote and I need 3 screens. This makes it to where I’m no longer confined to my desk and can work where I want. The picture quality is good, the response time is excellent. I love the traveling case so I can take it with me. Using this screen doesn’t slow down my productivity as long as I bring my mouse. I highly recommend this product for anyone who uses their laptop and need screen extenders on a regular basis. They also don’t feel cheap. They are well made without being too heavy. The only down side is that the cords can be a bit of a hassle. Even with that this is well worth the buy!
Michael Dahman –
Great for its price!
I bought this 14-inch portable monitor mainly to use as a second screen for my laptop and I’m honestly impressed. The display is super clear and sharp, 1080p looks great on this size. Colors are bright and viewing angles are pretty good thanks to the IPS panel. It’s way thinner than I expected too, almost like a tablet.Setup was plug and play for me. I used the USB-C with my MacBook and it worked right away. I also tried it with my PS5 using the HDMI port and it worked without any issues, which was a nice surprise. Love that it’s compatible with different devices, I even used it with my phone for a bit just to try it out.Only thing is the built-in speakers aren’t that great. They work, but sound kinda flat and low. But that’s not a big deal for me since I usually use headphones anyway.Overall, it’s been really useful for work and travel. I toss it in my backpack and it barely takes up space. If you need a lightweight extra screen, this one’s definitely worth it.
Diana –
Esta pantalla tiene muy buena resolución, desde que la compré no me ha fallado y la uso por horas, fue una muy buena compra y puedo trabajar ahora con dos monitores desde mi cama, sala, comedor, etc., definitivamente la recomiendo