TX850/RX850  XAUI Electrical Interface: 4 Lanes @ 3.125Gbit/s Reach - 0,3 km 10G XENPAK compatible MultiMode Fiber operation SC-Duplex Optical Receptacle  MDIO, DOM Support PIN Photo-detector  Hot Z-Pluggable Compliant to IEEE 802.3ae 10GBASE-LR Application Compliant to XENPAK MSA Operating temperature range: 0 °C ~+70°C