Drive numbering Depending on the configuration, this compute module can support hard drives, SSDs, NVMe drives, and uFF drives (supported in dual SFF flash adapters) in the drive bays. Depending on the device installed, the bay number might be different. Standard two-drive kit Item Hard drive/SSD bay numbering uFF drive bay numbering NVMe drive bay numbering 1 1 1 and 101 1 2 2 2 and 102 2 Premium four-drive kit Hard drive/SSD bay numbering Direct Connect CablingSLIM/SAS cabling1NVMe driveNVMe drive2NVMe driveNVMe drive3NVMe driveSAS/SATA drive4NVMe driveSAS/SATA drive