Gigabyte GS-SR102 System Installation Manual page 23

Fig-33
d. After that before the raiser bracket into the PCI slot
motherboard , remove the mother board from chassis and
change IO shielding plate first .And then put raiser bracket
into the PCI slot on motherboard .( Fig-35 & Fig-36 )
.
Fig-35
System Installation Guide
Fig-34
Fig-36
3-17