Dell EMC Unity 480 - DPE Power Supply

4-port 12Gb SAS backend I/O module
Where supported, the 4-port 12Gb SAS backend I/O module comes with four x4 lane
mini-SAS high density (HD) ports, one power and fault LED, and a combination link
and activity LED for each port. Install thisI/O module into the SP assembly to provide
additional SAS buses. Labeled 12Gb SAS v1.
Note
The optional back-end 12-Gb/s SAS module is only supported on Unity 480F, Unity
680F, and Unity 880F systems.
The 4-port 12Gb SAS backend I/O module can also be configured to support x8 lane
cabling for the 80-drive DAE by combining ports 0 and 1 as back-end 2, or ports 2 and
3 to create back-end 4. The I/O module can also be configured to support both x4 lane
and x8 lane back-ends simultaneously.
Note
If the 4-port 12Gb SAS backend I/O module is to be configured for x8 lane cabling, the
x8 lane cable must be inserted into the I/O module before persisting it. If the x8 lane
cables are not inserted into the I/O module first, all four ports default to x4 lane ports.
DPE power supply
NOTICE
The power supply used in your system must meet the system power requirements and
must be the same type of power supply to be used in both nodes. Do not mix power
supply types.
Figure 10 DPE power supply LEDs
Table 7 DPE power supply LEDs
LED Location State Description
AC power (input) Green AC power is on.
Off AC power is off. Verify source
power
DC power (output) Green DC power is on.
Off DC power is off. Verify source
power.
Fault Solid amber Power supply or backup fault.
Check cable connection.
DPE component descriptions
16 Unity 480/F, Unity 680/F, Unity 880/F Hardware Information Guide