CPAK transceiver module - 100 Gigabit Ethernet - 100GBase-ER4Lite - SC/PC single-mode - up to 15.5 miles - 1310 nm - for P/N: A99-8X100GE-TR, A99-8X100GE-TR=, A9K-8X100GE-SE, A9K-8X100GE-SE=, NCS4K-2H10T-OP-KS=