Split your chassis fan connector into two with this BattleBorn 3-Pin Fan "Y" Splitter Cable (Yellow). This is the perfect solution for those who have one motherboard fan header in an area requiring two fans. Compatible with all fans (NZXT, BitFenix, Noctua, etc.).Note: Only one 3-Pin male connector has a tachometer/speed wire. This is because motherboards/fan controllers cannot accurately read the fan speed when two speed signals are being given simultaneously. This cable is made correctly to avoid this problem, with only one tachometer wire on one of the male connectors.