Fan connector

A fan connector for being connected to either a first mistake-proof 4-pin fan header which is compatible with a 3-pin fan header or a second mistake-proof 4-pin fan header which is incompatible with a 3-pin fan header, the first mistake-proof 4-pin fan header comprising a first base, four spaced first pins extending up from the first base, and a mistake-proof first hook perpendicularly extending up from a side of the first base aligning with and bent towards three of the first pins, the second mistake-proof 4-pin fan header comprising a second base, four spaced second pins extending up from the second base, and a mistake-proof second hook perpendicularly extending up from a side of the second base aligning with and bent towards the four second pins, the fan connector comprising:

• a main body;
• four first holes defined in the main body for electrically receiving the first pins;
• and
• four second holes defined in the main body for electrically receiving the second pins;
• wherein the main body comprises a first sidewall, a second sidewall opposite to the first sidewall, and a bottom wall connected between bottoms of the first and second sidewalls;
• said four first holes are defined in the bottom wall adjacent to the first sidewall, and said four second holes are defined in the bottom wall adjacent to the second sidewall;
• two first flanges are respectively formed on an end of the first sidewall and a portion of the first sidewall adjacent to an opposite end for sandwiching the first hook, and two second flanges are respectively formed on opposite ends of the second sidewall for sandwiching the second hook.