The Dell Thunderbolt™ Dock TB16 -240W with Intel® Thunderbolt 3 technology is the ultimate docking solution designed for power users and traditional workstation clients. It allows you to connect up to three FHD displays, two 4K displays, or one 5K display at 60Hz. Data transfers up to 40 Gbps enable lightning-fast transfers of larger files. The dock has a small footprint of 5.7 x 5.7 x 2 inches (145 x 145 x 51mm). By connecting one cable to your laptop, you can access a wide variety of ports, enhancing productivity. The Dell Thunderbolt™ Dock TB16 -240W can provide power to your laptop (at 19.5V) and can also provide up to 60W of power to attached Thunderbolt™ 3 peripherals. Dell Precision, Latitude, or XPS notebooks with a Thunderbolt™ 3 port can receive up to 130W of power. For Precision 7510/7520/7530/7710/7720/7730, the workstation power adapter needs to be plugged in for optimal operation as they require more than 130W. The dock is black.