The JCA254 USB™ to HDMI™ Multi-Monitor Adapter works as an external video card, instantly allowing users to attach additional displays via HDMI™ connection without the hassle of a lengthy setup or having to install additional hardware. The USB-C® Display Adapter can support up to four displays running on the same computer, turning your workstation into a fully-functioning, multi-display powerhouse . This USB™ adapter works as an external video card, instantly allowing additional displays without the hassle of opening the computer casing and installing an external graphics card. You can have a second monitor with an extended display, a mirrored display, a rotational display (rotation mode not available for Mac® ), or make it your primary monitor. Now enjoy true 1080p HD resolution through any Windows® or Mac® computer with a USB-C® port. These adapters are also backwards compatible with USB™ 2.0 resolutions and playback, which are ideal for office applications. The simple plug-and-play function allows you to connect your computer to a second monitor or projector within seconds to create a new visual environment on Windows® 10 or later.