AD299A/AD355A Fibre Channel Mass Storage Adapters Installation Guide

Technical Specifications and Regulatory Information
AD355A Technical Specifications
Appendix A
26
NOTE
1
PCI Express (PCIe) differs from the previous generation PCI-X bus in that it uses multiple
lanes of serial links to transport data between the HBA and the system. The AD355A is a PCIe
x4 Gen1 HBA. The “x4” indicates that the AD355A uses four PCIe lanes; the “Gen1” indicates
that each lane is capable of transferring user data plus PCIe control data at 2.5 gigabits per
second in both transmit and receive directions, simultaneously. The total raw bandwidth of the
PCIe x4 Gen1 link is 10 Gb/s in each direction, which means that the PCIe x4 Gen1 link can
accommodate a 4 Gb/s 1-port or 2-port HBA running at full speed.