Plugable HDMI up to 2560x1440 and DVI/VGA 1920x1200. Supports Windows 10, 8.1, 7, XP Provides SuperSpeed USB 3.0 (5Gbps) link from PC to video and Ethernet. Connect two additional monitors to almost any Windows-based laptop, desktop, or tablet HDMI port supports resolutions up to 2560x1440* and DVI/VGA port supports display resolutions up to 1920x1200. Connects via USB 3.0 or 2.0, and is USB bus powered so no additional power adapter is needed Full support for Windows 10, 8.1, 7, & legacy XP systems. USB 3.0 connection recommended for best performance. Surface RT, Mac OS X, and Linux/Unix are not supported. Does not support HDCP. Suggested for use with web and productivity software; not re *2560x1440 output only available when using a single HDMI display connected through the dock. If dual displays are connected, each will be limited to a max. resolution of 1920x1200. 2560x1440 output requires a "High Speed" HDMI cable. 2560x1440 mode We love our Plugable products and hope you will too. All of our products are backed with a 1-year limited parts and labor warranty and Seattle-based email support. An HDMI and a DVI port for connecting two external monitors and support<span class="a-text-bold"> </span>for resolutions up to 25601440* (HDMI only) and 19201200 DVI (or VGA using the included DVI-to-VGA adapter) An RJ-45 Gigabit Ethernet network port (also supports 10/100 Ethernet) USB bus-powered device (no power adapter needed) DisplayLink DL-3900 chipset Compatible with Windows 10 / 8.1 / 7 / XP systems. Drivers can be automatically installed via Windows Update (with existing internet connection) or downloaded from Plugable Dual core or 2 GHz+ CPU &amp; 2GB RAM recommended. WDDM-compatible graphics drivers required (most recent Intel/AMD/Nvida graphic chips meet this requirement) Updated USB 3.0 host controller drivers and graphics drivers suggested for best performance and compatibility Cannot be mixed with non-DisplayLink USB graphics adapters and drivers (e.g. MCT, j5, or SMSC) Not compatible with the Microsoft Surface Book. Not compatible with Mac, Linux or ARM-based Windows (Surface RT). Supports single HDMI display up to 2560x1440@50Hz, or dual 1920x1080 displays @60Hz Dual-Link DVI monitors not supported Does not support HDCP, and will not allow for playback of encrypted Bluray disks or copy-protected content Suggested for web/productivity software; not recommended for gaming