Most likely if that port is a dms-59, which it is, thats the only connector on the card. The DMS-59 is usually for AMD firefv cards, earlier Nvidia and Matrox cards. Basically workstation. It would be in your best interest to get a different video card that actually have dvi, vga, hdmi ports on it.
It's an old Nvidia card. I can get that dongle for about 8 dollars. I just want to connect my dvi monitor to the card. It's a spare computer so I don't want to really buy another video card.
Would the Dongle work and just use one monitor