Diamond Multimedia Ultra Dock Dual Video USB 3.0/2.0 SuperSpeed Universal Docking Station with Gigabit Ethernet, HDMI and DVI Outputs Audio Input and output for Laptop, Ultrabook, Macbook, Windows 8.1, 8, 7, XP and Mac OS. Display Link Certified, DL- 3900 Chip (DS3900). (HDMI up to 2560x1440 and DVI / VGA to 2048x1152 / 1920x1200, Gigabit Ethernet, Audio, 2 USB 3.0 Ports, 4 USB 2.0 Ports, 20W Power Adapter) Compliant to USB 3.0 and USB 2.0 Two USB3.0 down-stream ports supports Super-speed, high-speed and full-speed traffic Four USB2.0 down-stream ports support Super-speed, high-speed, full-speed and low-speed traffic IEEE 802.3, 802.3u, and 802.3ab compatible Supports IPv4/IPv6 Supports full duplex operation with IEEE 802.3x flow control DisplayLink (DL-3900 chipset) HD 1080P HDMI/DVI dual digital video outputs Extended Desktop (Default), Mirrored Desktop, Primary Display