Cisco - XFP transceiver module - SONET/SDH/ 10 GigE/ POS - 10GBase-ZR - LC single-mode - up to 49.7 miles - OC-192/STM-64 - 1550 nm - refurbished - for P/N: A900-IMA2Z/ A9K-8T-E/ A9K-MPA-2X10GE/ A9K-MPA-4X10GE/ ASR1000-2T+20X1GE/ ASR1000-6TGE