Kensington SD4000 Universal 4K USB Docking Station (K33983AM) Enables 4K UHD even if laptop does not have 4K graphics card 4K Ultra HD resolution (3840x2160) to one monitor via an HDMI cable or DisplayPort connection 2K resolution (1920x1200/2048x1152) for two-monitor setup via DisplayPort or HDMI/DVI Compatible with Windows 8.1/8/7 only 2.1A fast charging port to power up a tablet or smartphone 3 universal USB 3.0 ports for seamless productivity with your accessories Gigabit Ethernet port for wired connectivity to the Internet Includes speaker port, microphone jack, Kensington Security Slot 4K Ultra HD resolution (3840x2160) to one monitor via an HDMI cable or DisplayPort connection Enables 4K UHD even if laptop does not have 4K graphics card 2K resolution (1920x1200/2048x1152) for two-monitor setup via DisplayPort or HDMI/DVI 3 universal USB 3.0 ports for seamless productivity with your accessories 2.1A fast charging port to power up a tablet or smartphone