Based on this product's specifications, here are some alternatives and similar models
Firewire 800 PCIe Card Digitus DS-30203-2
Summary description:
The Digitus Firewire 800 PCIe Card (DS-30203-2) offers wired connectivity with a maximum data transfer rate of 800 Mbit/s. Designed for internal installation, it utilizes the PCIe host interface, ensuring high-speed data transfer for devices that require Firewire connectivity. Ideal for professionals needing reliable performance in video editing and data transfer tasks.