ITEM NAME:PCI-E 1x to 16x Mining Enhanced Extender Riser Adapter with 4/6/15Pin Port #gib Store Home Promotion Hot Item Add to Fav.PCI-E 16x slot with lock for easy removal and fixed graphics card, so that graphics will not fall from the slot. Compatible with 1x, 2x, 4x, 8x, 16x card. Solution: In BIOS setting, you need change the PCI-e 16X speed into GEN2 and then the riser card will work normal.