StarTech.com Thunderbolt 3 to FireWire Adapter - External PCI Enclosure - PCIe Card plus TB3 Chassis - The Thunderbolt 3 to 1394 FireWire adapter connects your FireWire peripherals to your Thunderbolt 3
Amazon.com: Syba SY-PEX30016 3 Port IEEE 1394 Firewire 1394B & 1394A PCIe 1.1 x1 Card TI XIO2213B Chipset Requires Legacy Driver for Windows 8 10 : Electronics
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PCIe Firewire Card for Windows 10, IEEE 1394 PCI Express Controller 4 Ports Card | eBay