QSFP + Active Optical Cables (AOCs) are active optical cables of the QSFP + interface. The module has a photoelectric conversion device inside to convert the electrical signals into optical signals and transmit distances up to 100 meters. The products have four channels, each channel transmission rate up to 10Gb / s, rate of 40Gb / s. Its low power consumption, low bit error rate, easy to manage, high-performance features are widely used in short distance high-speed connection such as 10 Gigabit Ethernet, 10 Gigabit switches, 10 Gigabit servers, supercomputers, cloud computing and cloud storage networks.