Club3D 4K Docking Station for Laptops - HDMI and DVI - USB 3.0 (CSV-3104D) Four USB 3.0 ports - two standard ports, and two always-on fast-charge and sync ports compliant with USB Battery Charging Specification 1.2 HDMI and DVI video output Easy-access 3.5mm 4-position TRRS headset port (audio plus microphone Gigabit Ethernet RJ45 port with Wake-on-LAN (WOL) support HDMI (single display) max resolution: 3840 X 2160p (4K 30Hz) DVI Resolution up to 2048 X 1152p 60Hz HDMI and DVI (two display) HDMI: 2048 X 1152p DVI: 2048 X 1152p Support audio 2.1 Channel and Gigabit Ethernet The universal laptop docking station is compatible with most USB 3.0 enabled laptops, such as your Ultrabook, Microsoft Surface Pro 3, Surface 3, Lenovo Yoga, MacBook, and many Windows based tablets Matte, silver sandblast finish with black side trim that matches your MacBook or Ultrabook