Navigate to support.dell.com.
Browse to the Drivers & Downloads page in your language, and then do one of the following:
Then click Continue and follow the directions for the option selected.
On the page for the server selected, scroll down to Refine your results and under Operating System, use the drop-down list to select the ESX or ESXi system you want.
Click Enterprise Solutions.
In the Enterprise Solutions list, select the version of ISO required, and then click Download File.
In the dialog box, select For Single File Download via Browser, and then click Download Now.
In the dialog box, browse to the location to store the ISO images for deployment.