Cisco DWDM-XENPAK-59.79

The Cisco DWDM-XENPAK-59.79 is a transceiver module used in optical networking. It is specifically designed for Dense Wavelength Division Multiplexing (DWDM) applications. The "XENPAK" refers to the form factor of the transceiver module, which is a standardized interface for 10 Gigabit Ethernet. The "59.79" indicates the specific wavelength of light that the module operates on, which is 1559.79 nm. This module allows for high-speed data transmission over long distances using DWDM technology.