This Sonnet Echo Express SE I expansion system is the perfect addition to your computer setup. With a Thunderbolt 3 interface and PCI Express x8, it provides lightning-fast connectivity for your drives and devices. The unit is made of durable aluminum and comes in a sleek black color, adding a touch of professionalism to your workspace. Measuring 3.5 inches in height, 7.7 inches in length, and 5.63 inches in width, this unit is compact and easy to fit in any setup. It comes with a TB3 cable, power supply, and is designed to support drives and storage devices. Whether you're a professional or a casual user, this Sonnet Echo Express SE I expansion system is a reliable and efficient choice for your computer needs.