Owners Manual

CAUTION: To avoid damage to the battery connector, you must firmly support the connector while installing
or removing a battery.
2. Use a plastic scribe to pry out the system battery.
Figure 90. Removing the system battery
3. To install a new system battery, hold the battery with the positive side facing up and slide it under the securing tabs.
4. Press the battery into the connector until it snaps into place.
Figure 91. Installing the system battery
Next steps
1. Install the expansion card riser 1A.
2. If applicable, connect the cables to the expansion card(s) in the expansion card riser 1A.
3. Follow the procedures in After working inside your system.
4. While booting, press F2 to enter the System Setup and ensure that the battery is operating properly.
5. Enter the correct time and date in the System Setup Time and Date fields.
6. Exit the System Setup.
Power supply units
The power supply unit (PSU) is an internal hardware component which supplies power to the components in the system.
Your system supports 1100 W and 750 W AC power supply units (PSUs).
NOTE: For more information, see the Technical specifications section.
CAUTION: If two PSUs are installed, both the PSUs must have the same type of label. For example, Extended
Power Performance (EPP) label. Mixing PSUs from previous generations of NAS systems is not supported, even
if the PSUs have the same power rating. Mixing PSUs will result in mismatch condition or failure to turn the
system on.
NOTE: When two identical PSUs are installed, power supply redundancy (1+1 – with redundancy or 2+0 – without
redundancy) is configured in system BIOS. In redundant mode, power is supplied to the system equally from both PSUs
when Hot Spare is disabled. When Hot Spare is enabled, one of the PSUs is put into the sleep mode when system utilization
is low in order to maximize efficiency.
NOTE: If two PSUs are used, they must be of the same maximum output power.
118 Installing and removing system components