CFP2 is an evolved version of CFP used as an 100G form-factor pluggable transceiver for fiber optical communication. With a higher integration level, CFP2 is only half the size of CFP in 41mm. It consumes lower power and possesses a more compact port and higher production capacity. Besides these small differences, the functionality of CFP and CFP2 is identical. As for transmission range, CFP2 is usually used for long distance network applications up to 10km. Followed by CFP2, CFP4 is now designed to satisfy the further development of fiber optical transmission.