Amazon.com: PCI-E to USB Expansion Card Super Speed 7-Ports(5X USB 3.0 A,2X USB C) PCI Express(PCIe) Expansion Card Desktop PC Internal Hub for Windows 10/8/7 and MAC OS : Electronics
Magma ExpressBox 1T, 1 Slot Thunderbolt 2 to PCIe Expansion, half length - Digital Audio Service
PCIe Expansion Systems
AKiTiO T3N2AA0002Y00U Node Duo 2-Slot PCIe... at MacSales.com
AKiTiO Node Duo Thunderbolt 3 PCIe Expansion Chassis - T3N2AA0002Y00U. PC PitStop Data Storage Solutions - SAS Enclosures, DAS, NAS, iSCSI & FC SAN
MSI Thunderbolt 4 PCIe Expansion Card - MSI-US Official Store
Netstor Technology
1 Port PCI-e to 4X PCI Slot Expansion Enclosure - Coolgear
AKiTiO Thunder2 PCIe Expansion Box | Thunderbolt Technology Community
PCIe to 4x PCI slot Expansion Box - Coolgear
Akitio thunderbolt 3 to PCIe four lanes V3 - 4x 10Gb per lane for Mac and Windows - Akitio Thunderbolt
Magma EB3T ExpressBox 3T 3-Slot Thunderbolt 2 to PCIe EB3T B&H