The FC4622 Adapter Card is designed to transfer dual Mini SAS SFF-8644 to SFF-8643 interface, it will allow you to get 8 internal SAS ports out to JBOD'S or Expanders with Shielded External Cables. This will greatly improve your ROI on Host Adapters RAID Controllers. Features: Compliant with the latest SAS 3.0 spec Support 12Gb/s SAS data transfer speed Support 8 transmission port by Mini SAS SFF-8643 channel Support 2U/3U bracket Support all Windows systems Advantages: Suitable for external SAS Equipment connect to internal SAS interface for cost saving. Application: The card is used for internal to external servers, , It can be locked in the front panel of the server enclosures and it is widely used in external transfer card for servers and Mini cabinet equipment.