Assignment of generic SCSI devices,
device host/channel/ID/LUN type(numeric type) vendor model:

/dev/sg0 0/0/2/0 Scanner Color FlatbedScanner18
/dev/sg1 1/0/0/0 CD-ROM ATAPI CD-R/RW 4X4X32
/dev/sg2 2/0/6/0 Direct-Access IOMEGA ZIP 100