Hi @etoivy . The connector on the fan looks similar to the JST on the long led. Check out @alexpikkert's investigations on the long led .
Alex also shared pics on how he repaired a broken connection on the vibration motor.
For more chats on this topic, click on the magnifying lens and type JST. As always, you are welcome to contact support@littleBits.cc about any trouble you are having with a Bit.