Cisco - SFP+ transceiver module

10GbE - 10GBase-ER, 10GBase-EW - LC single-mode - up to 40 km - 1550 nm - for P/N: N540-12Z20G-SYS-D=, N540-28Z4C-SYS-D=, N540X-16Z4G8Q2C-A=, N540X-6Z18G-SYS-A