This is a 6 Inch 4-Pin to 3-Pin Multi-Fan Adapter. If you in need to power some 3-pin fans from a 4-pin power cable (molex PSU cable), this 4-pin to 3-pin fan adapter will do the trick. This adapter is handy if you don't have enough 3-pin fan power outlets on your motherboard, or don't wish to power your 3-pin fans through your motherboard (for custom fan speed monitoring).
If you have any questions, don’t be afraid to ask. No problem is too big or too small. We are, at our very core, a custom PC builder. So, if you have a custom need, we can find the solution. All you need to do is ask our sales team. We will be glad to answer all your questions.