Fiber-Mart XFP Loopbacks provides a method for port operation testing in board, hub, system and applications. The XFP Loopback supports various 10G application standards, it is capable of achieving up to 10Gbps data transfer rate. The dual integrated LED indicator light ensures the loopback is properly seated, powered and performance status. XFP Loopbacks are hot swappable, constructed of die cast for EMI performance. They are compliant with the industry standard XFP MSA (Multi-Source Agreement).