Used for a short time period. Tested working. 6x7 Networks relabel of branded Cisco optics. Works in Arista, Juniper, and Nokia switches tested as well.The Cisco DWDM-SFP10G-48.11-C is a DWDM SFP+ transceiver module designed for Cisco network distributors. It is compatible with Cisco devices and features a single module with SFP network ports capable of supporting a maximum data rate of 10 Gbps. This transceiver has a reach of 80km on channel 20 and is manufactured in China. Overall, it is a high-performance networking component suitable for enterprise networking environments.