Sonnet Echo Express SE1 Thunderbolt 3 Expansion Chassis

Connects a PCIe Expansion Card to Computers Without Slots—Use high-performance PCIe cards with any Mac or Windows PC with a Thunderbolt 3 port (not to be used as a GPU chassis)
One PCIe 3.0 x8 Slot—Supports one half-length+ (up to 7.75 inches long), full-height, single-width PCIe card (plus one daughter card)
40Gbps Thunderbolt 3 Interface—Offers 2750 MB/s of PCIe bandwidth, doubling the performance of Thunderbolt 2
Full Performance In a Small and Light Design—Takes up little space on the desktop, but large enough to support nearly every Thunderbolt-compatible PCIe card, at full performance
Two Thunderbolt 3 (USB-C) Ports—One port reserved for connection to the computer; second port supports daisy-chaining of up to five additional Thunderbolt(5) devices to your computer, attaching a single USB(6) peripheral device, or connecting up to two 4K displays or one 5K display(4)