The drive's logical unit number (LUN) is shown here. The LUN is an additional identification of the drive to the computer. If the drive is a SCSI device, its SCSI ID is shown here. The identification number of the bus the drive is on is shown here. The bus type (SCSI or IDE/ATA) is shown here. To select a device, click an item in this list. To initialise a device, click this button. Not available because no device is selected in the Volume Names list. To initialise the selected device, click this button.