The Thunderbolt 5 CubeDock with SSD Enclosure has a compact design, about 5 by 5 by 2 inches (12.7 by 12.7 by 5.2 cm), and weighs about 589 g. It is built from industry-grade aluminum for durability and heat dissipation.

The dock uses active cooling. It has an integrated fan that turns on as needed, along with ventilation, to keep the dock cool during heavy use.