Antec continues to provide consumers with exciting new ways to enhance their computing experience. Antec's products offer a unique and innovative solution to help you use your computer with more convenience, speed and excitement. Antec consistently looks forward with anticipation, excitement and a continuing commitment to excellence.PRODUCT FEATURES: Built-in temperature sensor; Variable speed: RPM increases as the temperature rises;Double ball bearing design for extended life; Comes with a 4-pin power connector and a separate signal connector to motherboard.