What You Get : The dual hdmi output ports can work simultaneously, which allow you to connect device with USB 3.0 Type A/C port to two external monitors via hdmi cable. Package: 1 x USB Type A/C to HDMI Dual Display Adapter; 1 x Quick Start Guide. 12-month warranty and life-long technical support. Note: Support usb c devices with data, charging and video output over Type-C port (DP Alt Mode). Before purchase, please check or confirm with us. Features a hybrid 2-in-1 cable, the dual monitor adapter is easily connected to USB-C, USB-A, thunderbolt 3/4 devices and then mirror or extend your screen content to greatly improve your work efficiency. Mirror mode: AAA; Extend mode: 1) AAB, 2) ABB, 3) ABC. There is no ABB mode in MacOS. This adapter providing a variety of protection systems to prevent over-current, over-voltage, short-circuit, heating dissipation, can improve the performance of the operation. It is an must have accessory for online education, data analysis, and home office, ideal for web and productivity software. Easily switch between different projectors during a meeting without multiple adapters. Not recommended for gaming, graphics-intensive or design work. Doesn't support playback of HDCP-protected content on sites like Netflix, Hulu and YouTube. USB to HDMI Adapter for dual monitors allows for effortless multitasking. Easily mirror or extend a computer display workspace, simple to install and use. Allows you to connect two screens simultaneously 1920x1080@60Hz to your laptop. Note: If your device signal keeps going in and out, please check your laptop with enough power, also check your HDMI cable and ports whether loose, or confirm with us. Supported Systems : Windows 11, 10, Mac OS 10.15 or later, only supports resolutions up to 1920x1080@60Hz. Note: ChromeOS, Android, iOS, Linux and Unix are not supported. It is worth noting that the "Udisplay" driver needs to be installed. In macOS, AAA and ABC modes are supported; in windows, 4 modes are supported: AAA, AAB, ABB, ABC. ?Online update is now supported for our products?.