Sonnet Technologies has unveiled the Echo Express II, the latest addition to the company’s range of Thunderbolt expansion chassis cards.

Featuring two PCI Express slots, it enables cards designed for use in desktop computers to be used with any computer equipped with a Thunderbolt port.

Sonnet chief executive Robert Farnsworth said: “Similar to the Echo Express Pro, the Echo Express II was designed to accommodate the needs of users requiring two slots for expansion cards, but not the extra length afforded by the Echo Express Pro’s longer design.”

The Echo Express II is available for £433.