42Gb/s data transmission speed, using 4*10.31G DFB laser transmitter and APD photoelectric detector, single-mode fiber transmission up to 40Km, hot-swappable SFP interface, LC pluggable optical interface, low power consumption, metal shell for reducing electromagnetic interference, in line with ROSA lead-free standard, single +3.3V power supply, support digital diagnostic monitoring function, SFF-8472 protocol