Description: Installed to PCI slot Can install 2x 8cm or 2x 9 cm, or 1x 12 cm, or 1x 14cm fan Side blown air provide cooling for video card heatsink, PCB, MOS, video card memory, especially graphics cards in SLI combination. Side blown also provide cooling for Northbridge, Southbridge to enhance local heat transfer, improve system stability, extend hardware life span.