Lenovo Universal USB-C Dock Physical Specifications Video Ports: Two DisplayPort (DP) One HDMI USB Ports: Three USB 3.1 Two USB 2.0 One USB-C Audio Ports: Combo Audio Jack Ethernet: Gigabit Ethernet Physical Security Feature: Security lock slot Maximum Number of External Monitors: 3 Maximum Resolution and Refresh Rate Two at 3840x2160 @60Hz; One at 3840x2160 @30Hz Charging Port: DC-IN Input Power: 90W Power Delivery: Yes Output Power: 65W with 90W power adapter connected;100W with 135W power adapter connected Power Button: Yes Power Plug: Slim-tip Dimensions Length: 171 mm (6.7 inches) Depth: 80 mm (3.1 inches) Height: 31 mm (1.2 inches) Weight: 340 g (0.74 lb)