KOOBOOK 1Pcs 1.44MB 3.5" Floppy Drive Connector 34 PIN 34P to USB Cable Adapter PCB Board with Power Cable

There doesn't seem to be any modern pci floppy controllers being made now. There are usb controllers. I would get one of the cheap floppy usb controllers, along with an internal USB 2.0 to USB a female adapter to mount it internally. https://a.co/d/05dBbCKt https://a.co/d/07k7uMMI

u/Tall-Umpire6880 I stand corrected. There is modern adapters that allow the installation of traditional 3.5" FDD to USB. Checkout this Amazon product for reference. https://a.co/d/06E25Uo8