Sonnet Echo III DesktopThe Sonnet Echo III Desktop is a professional desktop 3 slot Thunderbolt 3 to PCIe expansion chassis allowing the user to add up to 3 PCIe cards. The Sonnet Echo III Desktop uses the high performance of Thunderbolt 3 to connect up to additional PCIe peripherals such as graphics card, DSP cards, SSD, Networking and more. Every type of Thunderbolt 3 compatible cards including non GPU PCIe 1. 1, 2. 0, 3. 0 as well as audio DSP, 6Gb 12Gb SAS and SATA