CISCO - X2 TRANSCEIVER MODULE - 10GBASE-ZR (X2-10GB-ZR). KEY FEATURES : DEVICE TYPE : X2 TRANSCEIVER MODULE - SC MULTI-MODE ENCLOSURE TYPE : PLUG-IN MODULE CABLING TYPE : 10GBASE-ZR DATA TRANSFER RATE : 10 GBPS OPTICAL WAVE LENGTH : 1550 NM MAX TRANSFER DISTANCE : 49.7 MILES COMPLIANT STANDARDS : LASER CLASS 1, FCC CFR21 PART 1040, IEC 60825-1 DESIGNED FOR : P/N: WS-C4900M, WS-C4928-10GE, WS-X45-SUP6-E, WS-X45-SUP6-E/2=, WS-X45-SUP6-E-RF, WS-X4606-X2-E, WS-X4904-10GE, WS-X4904-10GE=, WS-X4908-10GE, WS-X4908-10GE=, WS-X6708-10G-3C-RF, WS-X6708-10G-3CXL-RF, WS-X6708-10GE, WS-X6716-10G-3C, WS-X6716-10G-3C=, WS-X6716-10G-3CXL, WS-X6716-10G-3CXL= CONDITION : NEW. AVAILABILITY : IN STOCK. OUR WARRANTY : 30 DAYS.