HP 4Gb Long Wave B-series 10km Fibre Channel SFP Transceiver 1 Pack AK870A HP 4Gb Long Wave B-Series FC SFP 1 Pack – 10km Specifications: Product dimensions (W x D x H) 2.9 x 4.37 x6.18 in Weight ( Imperial ) 0.04 lb Weight ( Metric ) 0.02 kg Application/Usage Data Networking Interfaces/Ports 1 x Fiber Channel Interfaces/Ports Details 1 x Fiber Channel Connectivity Media Fiber Channel Data Transfer Rate 4 Gbps Gigabit Ethernet