Most motherboards have a sufficient number of fan connectors for every fan in an average case, but some cases have more fans than a motherboard may have fan connectors (for example, my current computer is within a Cooler Master HAF XM case, which has front, rear, side, and two top fans, but I was thankfully able to find a motherboard with a connector for each fan, as well as one for the CPU cooler), so, I am wondering: what does a person do if their computer's case has more fans than their motherboard has fan connectors? Are there duplicators that allow two fans to be connected to the same connector?