StarTech.com 2-Port Multi Monitor Adapter, DisplayPort 1.2 MST Hub, Dual 4K 30Hz or 1080p, USB Bus Powered, Video Splitter for Extended Desktop Mode on Windows Only, DP to 2x DP MST Hub - Multi Stream Transport (MSTDP122DP) - Video splitter - 2 x DisplayP

This MST hub lets you connect two monitors to your DisplayPort (DP) 1.2 equipped Windows laptop or desktop. It's USB powered, so the only thing you'll need to operate the hub is your computer.
The newest generations of computers are more portable than ever, which often means that you're left with fewer video outputs and smaller integrated screens. This MST hub solves both of these problems by letting you connect two additional displays to your computer, which makes multitasking much easier.
With the MST hub, you can use DisplayPort video adapters and cable adapters that enable you to connect HDMI, VGA or DVI displays. This ensures your MST hub will be compatible with virtually any television, monitor or projector. The hub is VESA and DisplayPort certified to support DP 1.2 enabled systems, for seamless integration with your existing video equipment.
Using the MST hub, you can extend your desktop onto additional monitors and stream independent content to each display, giving you the freedom to multitask and increase your productivity. You can also mirror the same image onto multiple displays for remote viewing applications such as digital signage.
MST technology uses your existing video card to minimize the use of system resources while delivering Ultra HD 4K resolutions. This unprecedented performance makes MST perfect for high-resolution applications such as graphic design, gaming and medical imaging.
Note: When using a DisplayPort 1.1 video card the MST hub will act as a splitter, automatically mirroring your video source across all displays. Resolution limitations apply.