Thunderbolt 3 to PCIe Card Expansion|PCIe 3.0 x8 Slot
ASUS ThunderboltEX 4 Card, PCI Express, 2 x Thunderbolt 4 (USB-C), 2 x Mini DisplayPort In, TBT Header, USB 2.0 Header : Amazon.co.uk: Computers & Accessories
thunderbolt 3 to PCIE 3.0 x 16 PCI-E Expansion box Mini graphics dock stand by Audio card Video card Networking card