Product UPC: 691852460649 Third Party 10GBASE-ER+ XENPAK for Cisco : XENPAK-10GB-ER+ Device Type: Transceiver Media Conversion: SC Network Media: SM Wavelength: 1550nm Max Distance: 40km Transfer Rate: 10GBASE Temperature: 0 to 40C Weight: 1.10 lbs. (0.5 kg)