Index: /trunk/src/VBox/Devices/Storage/DevLsiLogicSCSI.cpp
===================================================================
--- /trunk/src/VBox/Devices/Storage/DevLsiLogicSCSI.cpp	(revision 43664)
+++ /trunk/src/VBox/Devices/Storage/DevLsiLogicSCSI.cpp	(revision 43665)
@@ -5235,5 +5235,5 @@
                                          "LsiLogic BIOS");
         else if (pThis->enmCtrlType == LSILOGICCTRLTYPE_SCSI_SAS)
-            rc = PDMDevHlpIOPortRegister(pDevIns, LSILOGIC_SAS_BIOS_IO_PORT, 3, NULL,
+            rc = PDMDevHlpIOPortRegister(pDevIns, LSILOGIC_SAS_BIOS_IO_PORT, 4, NULL,
                                          lsilogicIsaIOPortWrite, lsilogicIsaIOPortRead,
                                          lsilogicIsaIOPortWriteStr, lsilogicIsaIOPortReadStr,