So I looked up the schematics of my motherboard. It said I have a PC with PCI x1 expansion slot. I will link the schematics
http://www.manualslib.com/manual/276574/Hp-Pavilion-Slimline-S5730f.html?page=2#manual
http://www.manualslib.com/manual/276574/Hp-Pavilion-Slimline-S5730f.html?page=2#manual