280-0596-00 SFP, WDM BiDi 1310TX/1550RX, LC Connector, LX SMF 20km, 1000Base DDM, Cyan 280-0596-00_20K Compatible
280-0597-00 SFP, WDM BiDi 1550TX/1310RX, LC Connector, LX SMF 20km, 1000Base DDM, Cyan 280-0597-00_20K Compatible