Data rate: From 155Mbps, 622Mbps, 1.25Gb/s, 2.5Gb/s, and 4.25Gb/s Distance up to 20km Simplex SC or LC optical acceptable AType:Tx1310nm /Rx1490nm and Tx1490nm /Rx1310nm B.Type: Tx1310nm /Rx1550nm and Tx1550nm /Rx1310nm C.Type: Tx1490nm /Rx1550nm and Tx1550nm /Rx1490nm D. Type: Tx1510nm /Rx1570nm and Tx1570nm /Rx1510nm Metal enclosure for lower EMI Low power dissipation Built-in digital diagnostics function for option DDM available Compliant with MSA SFP Compliant with SFF-8472 Compliant with