2-Channel PCI-X to 4-Gb FC, LC SFP Interface - The ATTO Celerity FC-42XS is the next-generation of advanced storage connectivity solutions, leveraging the latest in storage performance -- 4-Gigabit Fibre Channel. The dual-channel Celerity FC-42XS host adapter provides the highest available throughput for Fibre Channel applications while protecting technology investments via backward compatibility with existing infrastructure. With speeds of up to 800 MB/sec. per channel, the FC-42XS is capable of supporting the most intensive data applications, including digital content creation, tape streaming and backup, rich content delivery and complex database environments. To ensure a smooth transition path, the FC-42XS leverages the existing Celerity FC software and hardware architecture, allowing ATTO to deliver industry-leading quality and stable software architecture.