HFBR-5963ALZ Avago Broadcom® Compatible Transceiver 2 x5 for ATM, FDDI, Fast Ethernet, SONET OC-3/SDH STM-1 (1300nm, 155Mbps, MMF, LC, 3.3v. Ind Temp) | Compatibility Guarantee | Lifetime warranty | Full compliance with all Industry Standards & Protocols