ISR4351/K9 Cisco ISR 4351 3GE 3NIM 2SM 4G FLASH 4G
1000BASE-CWDM 1590 NM GBIC (SINGLE MODE ONLY)
1000BASE-CWDM 1610 NM GBIC (SINGLE MODE ONLY)
GLC-BX-D= Base/1000 BX SFP-1490NM
Cisco transceiver module
Cisco transceiver module OEM
GLC-SX-MMD= Transceiver/1000BASE-SX SFP Module MMF