XFP is a hot-swappable optical transceiver for the transition of light and electricity signals in high-speed computer network and telecommunication links that use optical fiber. XFP means 10 gigabit small form factor pluggable. Before it came out, the transmission speed could only reach 1.25Gbps, 2.5Gbps or 4Gbps. However, this speed can not adapt to the network development, therefore XFP was designed for transmitting 10G data per second which greatly enhanced the communication speed. XFP is cheaper than SFP+ which can also provide the same transmission capacity, but due to its large size, people may choose a smaller-sized transceiver like SFP+.