E3.S drive box by default in the Box 3 uses the 12 E3.S 32G x4 NVMe UMB5 EC drive backplane.
For more information on the drive backplane description, see Drive backplane naming.
Drive backplane namingDrive backplane naming
This topic explains the features represented in the drive backplane naming. This naming convention was adopted starting in the HPE Gen11
server release. Your server might not support all the features listed in this topic. For server-specific support information, see the server
guides:
Drive backplane support, see Drive bay numbering.
Drive backplane cabling, see Storage cabling.