Item LED Type Icon Description
If this LED is off, it indicates that the DC output voltage are 
not within the limit.
2 Power supply/
cooling fan fault
The LED lights amber when the DC output voltage is not 
within the limit or a fault with the fan is detected.
If this LED is off, it indicates that no fault condition is 
present.
3 AC power The LED lights green when the AC input voltage is within 
the limit.
If this LED is off, it indicates either there is no power or the 
AC input voltage is not within the limit.
4 Power 
connector
Connect the external power supply to this connector.
5 Power switches 
(2)
The power switch controls the power supply output to the 
enclosure.
Related Documentation
NOTE: For all PowerVault documentation, go to dell.com/powervaultmanuals.
NOTE: For all Dell OpenManage documents, go to dell.com/openmanagemanuals.
NOTE: For all storage controller documents, go to dell.com/storagecontrollermanuals.
You product documentation includes:
• Dell PowerVault MD3400/3420/3800i/3820i/3800f/3820f Storage Arrays Getting Started Guide — 
Provides an overview of system features, setting up your system, and technical specifications. This 
document is shipped with your system.
• Rack Installation Instructions — Describes how to install your system into a rack. This document is 
shipped with your rack solution.
• Dell PowerVault MD Series Storage Arrays Administrator's Guide — Provides information about 
configuring and managing the system using the MDSM GUI.
• Dell PowerVault Modular Disk Storage Arrays CLI Guide — Provides information about configuring and 
managing the system using the MDSM CLI.
• Dell PowerVault MD3400 and MD3420 Storage Arrays Deployment Guide — Provides information 
about deploying the storage system in the SAN architecture.
• Dell PowerVault MD34xx and 38xx Series Support Matrix — Provides information about the software 
and hardware compatibility matrices for the storage array.
12