Cisco DWDM-X2-48.51

The Cisco DWDM-X2-48.51 is a transceiver module used in optical networks. It is specifically designed for Dense Wavelength Division Multiplexing (DWDM) applications. The "X2" refers to the form factor of the transceiver, which is a hot-swappable module that can be plugged into compatible networking devices. The "48.51" indicates the specific wavelength channel supported by this transceiver, which is 1551.72 nm. This transceiver allows for high-speed data transmission over long distances using DWDM technology.