Acer HDS AMS200 Reference Manual page 312

Note 2: When FC interface board is not added, one port configures one Mini-HUB, and
extends to two host connectors.
When FC interface board is added, control unit implements two ports and two host
connectors. One port configures FC interface independent of another port, and implements
one host connector.
Note 3: When FC interface board is added, the interface type supports 4 Gbps Fibre Channel
Optical (Non-OFC).
Note 4: When FC interface board is added, a maximum data transfer rate can be 400 M
bytes/s (Fibre Channel) depending on the host I/O condition.
Note 5: Indicates the value when the iSCSI interface board is added to the control unit.
292 Appendix C Basic Specifications of the Subsystem