Changes

Our original intention of designing X708 is to match with NAS shell (such as [[X829-C1]], [[X857-C1 Case |X857-C1]], [[X825-C2 Case |X825-C7]]) to provide a storage solution with UPS function. In this way, '''we must separate the battery ''' from the UPS expansion board when designing . This is also the biggest difference between X708 and X728;