HP B-series 8Gb Long Wave 25km Fibre Channel SFP Transceiver 1 Pack AW538A Specifications: Product dimensions (W x D x H) 6.5 x 4.5 x 2.95 in Weight ( Imperial ) 0.5 lb Weight ( Metric ) 0.23 kg Interfaces/Ports 1 x Fiber Channel Interfaces/Ports Details 1 x Fiber Channel Network Data Transfer Rate 8 Gbps Fiber Channel Additional Information Distance: 25km