EonStor CS Installation Guide
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5. Install the expansion board into the SAS expansion slot, then secure it with a screw.
IMPORTANT! If you are using only one SAS expansion host board, you must install it to the host
board’s slot 10. This slot is located on the rightmost side of the controller.
6. Install back the controller to the system (A). When you feel a contact resistance, use a small but
careful force, then push the ejection handles back in place (B).