https://www.macfixit.com.au/collections/thunderbolt-3-interface-adapters/products/sonnet-echo-express-se-iiie-3-slot-thunderbolt-3-expansion-chassis-for-pcie-cards
Connect three half-length, full-height PCIe cards to systems with a Thunderbolt 3 port using the Echo Express SE IIIe Thunderbolt 3 Expansion...
sonnetechoexpressseiiie