finally found a Firewire card that will work
been looking for about 6 months for a firewire for a PCI-E computer card that works on legacy flex radios , here is the amazon link.
https://www.amazon.com/gp/product/B07Q2G79QG/ref%3Dppx_yo_dt_b_asin_title_o05_s01?ie=UTF8&psc=1
This card looks identical but WILL NOT WORK FOR ME.😫
https://www.amazon.com/gp/product/B0753H8GTY/ref%3Dppx_yo_dt_b_asin_title_o05_s01?ie=UTF8&psc=1