The CX3 supports the older DAE2, DAE2-ATA, DAE2P and DAE3P. The DAE3P will show up as a DAE3P in Navisphere under the Physical tree.

In Unisphere you'll have to go to the Hardware/Disk Enclosure/Properties to see the DAE type and the DAE3P will be listed as DAE3P.

I don't have any of the older DAE's attached to a CX3 to see what they show up as, but I would imagine it should show the actual type.

This link with provide more information about the disks and DAE's for a CX3:

https://support.emc.com/docu32282_CX3_UltraScale_Series_Storage_Systems_Disk_and_FLARE_OE_Matrix.pdf?language=en_US

glen