MSI ThunderboltM3 PCI-E 3.0 x4 Add-on Card for 2 x Thunderbolt 3 (USB-C) Ports Add-On Cards - Newegg.com
Amazon.com: ASUS ThunderboltEX 4 with Intel® Thunderbolt™ 4 JHL 8540 Controller, 2 USB Type-C Ports, up to 40Gb/s bi-Directional Bandwidth, DisplayPort 1.4 Support, up to 100W Quick Charge. : Electronics
HP® Thunderbolt 3 PCIe 2-port I/O Card (3UU05AA)
Plugable Thunderbolt™ 3 and USB-C Dual Display Dock with 96W Host Char – Plugable Technologies