Extreme Networks 10GB-ER23-SFPP Compatible 10GBASE-DWDM SFP+ Optical Transceiver Module (SMF, 1558.98nm, 100-GHz ITU grid, Channel 23, 40km, LC, DOM)

Extreme Networks 10GB-ER29-SFPP Compatible 10GBASE-DWDM SFP+ Optical Transceiver Module (SMF, 1554.13nm, 100-GHz ITU grid, Channel 29, 40km, LC, DOM)