The Belkin Thunderbolt 3 Dock Mini is a docking station made of rigid plastic that provides passive cooling. It is compatible with various laptop brands and models, including Apple, Acer, ASUS, and Compaq. The dock features two HDMI ports that support 4K resolution, USB-C, USB 3.0, USB 2.0, DisplayPort, Ethernet, and Thunderbolt 2 and 3 ports. It also has a built-in USB port and is dustproof. The dock measures 3.1 inches in length, 0.8 inches in height, and 5.1 inches in width.