Cisco - SFP (mini-GBIC) transceiver module - 1GbE - 1000Base-LX, 1000Base-LH - LC single-mode - up to 10 km - 1310 nm - for P/N: A9K-MPA-20X1GE-RF, A9K-RSP440-SE-RF, ASR-9001-RF, ASR-9001-S=, ASR-9001-S-RF