PCI adapter card

I have an old Gigabyte GC-RAMDISK that I wanted to get some use out of again but since it uses legacy PCI instead of PCIe, I can't really use it on any modern PC I have. So I was wondering if it'd be possible to convert it into a portable USB drive? The Ramdisk only uses the PCI slot for power...

I have an Intel 55SB mobo and I can't get my R9 270X to work on it! I don't know why. To make it even stranger, the BIOS does show up with the new card in, but when I go to hit a button for boot menu, it just beeps. Any ideas on what to do?