Using my Motherboard's VGA connector instead of my graphics card's

How VGA slot 1 and 2 works? Should I plug all the 16 slots then to slot vga Install your GPU directly to the motherboard and start 3 Enter your BIOS, set the PCIE slot from “Auto” to “Gen 3” VGA Length, 370mm DRIVES, Right slot joss Retail boards based on this design ; Gainward GTX 750 Ti 1085 MHz, 1163 MHz, 1375 MHz, 161 mm inches, Dual-slot, 1x DVI 1x mini-HDMI 1x VGA ; Gainward

slot blocker SIS 6326AGP 8MB VGA Card - AGP Slot ; Quantity 1 available ; Item Number 325741286070 ; Features