It has only 1 floppy connector on that board. The 3 green and 1 white are IDE and IDE RAID..
The black one is the floppy
View attachment 372926
Have you connected it the right way?
The 1 end with the twisted part goes to the floppy. The other end to the floppy connector on the board. And again, that is the black connector. The connector in the middle of the cable normally is not used
And setup Drive A as 1.44MB in the BIOS
Drive B: None
When your led of the drive starts blinking immediately after turning on the PC, switch the cable at the floppy drive.. Of course when you turned off the PC....