10 Best Second Monitor 2025 in the United States

The MNN Portable Monitor is a handy 15.6-inch Full HD display perfect for those needing a second screen. With a resolution of 1920x1080, it offers clear and detailed images, which is great for both work and entertainment. The IPS matte screen ensures vibrant colors and wide viewing angles, making it easier on the eyes for extended use. The anti-blue light feature is a nice touch for reducing eye strain during long hours of use.

One of its standout features is its portability. It's lightweight and ultra-slim, making it easy to carry around, whether you're traveling or just moving from room to room. The monitor comes with a smart cover that doubles as a stand, providing protection and convenience. Connectivity is a strong point with this monitor, offering two full-featured USB-C ports that support power and display signal transmission. This means you can easily connect it to a variety of devices, including laptops, PCs, phones, and gaming consoles.

The monitor also includes built-in speakers, which is a nice addition, although they might not provide the best sound quality for those looking for an immersive audio experience. Adjustability options like different display modes (Copy, Extended, Second Screen, Portrait) and HDR support enhance its versatility, making it suitable for both work and gaming. While the monitor offers significant benefits, there are a few limitations. It relies heavily on having compatible USB-C ports, and the sound quality from the built-in speakers may not meet the expectations of all users. Additionally, the reliance on the original USB-C cable means that losing it could be a hassle. Despite these minor drawbacks, the MNN Portable Monitor is an excellent choice for those needing a versatile and portable second screen solution.

The KEFEYA Laptop Screen Extender is a portable, 14-inch Full HD (1080P) IPS monitor designed to enhance productivity by offering a dual-screen setup for laptops sized 13 to 17 inches. Its high-resolution display ensures clear and vibrant visuals, making it suitable for various tasks such as video conferencing, programming, gaming, and stock trading. The IPS panel provides consistent color and wide viewing angles, ensuring a good visual experience from different positions.

The device boasts an easy plug-and-play setup with USB-C and HDMI ports, eliminating the need for additional drivers, making it user-friendly even for those not tech-savvy. It also includes all necessary cables for immediate use, which is a convenient touch. The monitor supports multiple display modes, including mirror, extension, and both landscape and portrait orientations, offering flexibility in how you use it. The 180° rotation feature further enhances its usability by allowing easy screen sharing during collaborations.

This screen extender is highly compatible with a wide range of devices and operating systems, including Windows, Mac, Android, and gaming consoles like PS5 and Switch. On the downside, the product weighs 4.16 pounds, which might be slightly heavy for those who prioritize ultra-light portability. Additionally, it lacks specific mention of refresh rate, which might be important for gamers seeking smoother visuals. The matte screen surface helps reduce glare, which is beneficial for prolonged use. This portable monitor is particularly beneficial for remote workers, students, traveling professionals, and casual gamers looking for an efficient way to expand their screen real estate.

The KYY 15.6-inch Portable Monitor is a solid option for those seeking a second monitor, offering Full HD 1080p resolution for crisp and clear visuals. The IPS panel ensures vibrant colors and wide viewing angles, making it suitable for various uses, including gaming, multimedia, and professional tasks. Its compact and lightweight design (1.7 pounds and 0.3 inches thick) makes it highly portable, ideal for users who need a second screen on-the-go.

Connectivity is versatile with two USB Type-C ports and a Mini-HDMI port, allowing easy connection to laptops, smartphones, gaming consoles, and more. However, it’s important to note that compatibility requires devices to support Thunderbolt 3 or USB-C 3.1. The monitor also includes built-in speakers and a durable smart cover that doubles as a stand, although the audio quality may not be as immersive as external speakers. The matte screen surface reduces glare, providing a comfortable viewing experience even in bright environments.

One downside is the lack of adjustable stand height or rotation, offering limited ergonomic flexibility. Despite minor drawbacks, the KYY Portable Monitor is a practical and high-performing choice for users needing a versatile and portable second screen.