Dell 90w Power Delivery Dock - WD19. 3840 x 2160 - 30 Hz. Data Link Protocol: Ethernet, Fast Ethernet, Gigabit Ethernet. Interfaces: 2 x display / video - DisplayPort - 20 pin DisplayPort, 1 x display / video - HDMI - 19 pin HDMI Type A, 1 x USB-C, 3 x U