The Cisco DWDM-SFP-5012 1000BASE-ZX Ethernet transceiver is a DWDM SFP transceiver for optical communications, rated for distances up to 80 km and a maximum bandwidth of 1Gbps. The DWDM-SFP-5012 transceiver operates at 100GHz (C-Band) wavelength. 1000BASE-DWDM 1550.12 nm SFP (100-GHz ITU grid). The Cisco Dense Wavelength-Division Multiplexing (DWDM) Small Form Factor Pluggable (SFP) module allow enterprise companies and service providers to provide scalable and easy-to-deploy Gigabit Ethernet or Fibre Channel services in their networks. Note: Due to manufacturer restrictions, Cisco DWDM-SFP-5012 is a non-cancellable & non-returnable product. Please call to confirm stock. This product is manufactured by Cisco USA, ships directly from Cisco and is covered by full manufacturer warranty within the USA. For most up-to-date specifications, refer to datasheets on Cisco website. Images are for illustrative purposes only