I am running the Adaptec 3405 and just reset from the GUI Setup > HW RAID the clicked on the "reset" button, then restarted the system. Once fully rebooted, loaded the Adaptec Storage Manager then selected the Remote menu, select Remote Add, or click (Add) on the toolbar. The "Add managed system" window opens. From the Type drop-down list, select: Managed system (Internal RAID), to add a managed system with internal RAID storage. Now enter the IP Address of the Open-E (leave the default port). Then enter the user name "raid" and password "raid".

You should be good to go, if not check to see if you have any firewalls blocking the port.

From the GUI help.

If an Adaptec RAID series controller is installed, you can use a command line tool in the console tools (press F1 in the console to list available keyboard shortcuts) or the Adaptec Storage Manager tool. When connecting remotely to the Adaptec Storage Manager tool, the default user and password are raid.

Reset
Restores factory default settings for the Adaptec Storage Manager.

Note
It is not recommended to change the Agent system base port number (in the Agent system port menu) in Adaptec Storage Manager, because this may cause other services to malfunction.
Location
SETUP -> H/W RAID -> Function: Adaptec administration.