CalDigit Thunderbolt 3 mini Dock Dual HDMI (No Laptop Charging) - for Desktop PC/Notebook/Monitor/Keyboard - Thunderbolt 3 - 2 Displays Supported - 4K @ 60Hz, QHD - 4096 x 2160, 3840 x 2160, 3440 x 1440, 2560 x 1440 - 2 x USB Ports - 1 x USB 2.0 - 1 x USB 3.0 - 1 x USB Type-A Ports - USB Type-A - 1 x RJ-45 Ports - Network (RJ-45) - 2 x HDMI Ports - HDMI - Black, Gray - Thunderbolt - 1 x Thunderbolt 3 Ports - Wired - Gigabit Ethernet - Mac OS X 10.12 Sierra, Windows 10 - Portable: