Cable Adapter, CB-3Y12, Cooling Fan 3pin Splitter Cable with Housing, 12" Use 1 x 3-pin motherboard header to power 2 x cooling fans with 3-pin connector 12-inch long, female end 3-pin header plugs on to motherboard (or 3-pin male connector from power supply), 2 x 3-pin male headers to cooling fans Male header housing provides more secured connection