Dell EMC PowerFlex Appliance and VxFlex Ready Node R840 Owner's Guide This section provides an overview of the PowerFlex Appliance and the VxFlex Ready NodeR840. Child Topics R840 system overview The PowerFlex Appliance and VxFlex Ready NodeR840 server is a 2U server that supports a maximum of: Front view of the R840 system Use this topic to understand the front view of the R840 system. Rear view of the R840 system The back view displays the features available on the back of the R840 system. Inside the system Components that are hot swappable have orange touch points and the components that are not hot swappable have blue touch points. Locating the Service Tag of your system You can identify your system using the unique Express Service Code and Service Tag. Pull out the information tag in the front of the system to view the Express Service Code and Service Tag. Alternatively, the information may be on a sticker on the chassis of the system.