Product description NWANSI 1Pair Gigabit Fiber SFP Module 1000Mbps LC 1.25G 1310nm/1550nm Single Mode A+B Fiber Module Product Parameters Name SFP Fiber Module Connector A SFP Male Connector B LC Female Wavelength 1310/1550nm or 1490/1550nm Fiber Port Rate 1.25G Transmission Mode Single Mode Single Fiber Operating Temperature -15 ~ +65 Size 58*15*13mm ( 2.28 * 0.59 * 0.51 in)