usb 1-1: new high speed USB device using ehci_hcd and address 4
usb 1-1: configuration #1 chosen from 1 choice
scsi2 : SCSI emulation for USB Mass Storage devices
usb-storage: device found at 4
usb-storage: waiting for device to settle before scanning
  Vendor: AOPEN     Model: CRW5232/AAO       Rev: 1.03
  Type:   CD-ROM                             ANSI SCSI revision: 00
usb 1-1: reset high speed USB device using ehci_hcd and address 4
sr 2:0:0:0: scsi: Device offlined - not ready after error recovery
sr 2:0:0:0: rejecting I/O to offline device
sr 2:0:0:0: rejecting I/O to offline device
sr0: scsi3-mmc drive: 0x/0x caddy
sr 2:0:0:0: Attached scsi CD-ROM sr0
sr 2:0:0:0: Attached scsi generic sg0 type 5
usb-storage: device scan complete


localhost linux # cdrecord -scanbus
Cdrecord-ProDVD-Clone 2.01.01a10 (i686-pc-linux-gnu) Copyright (C) 1995-2006 Jörg Schilling
Linux sg driver version: 3.5.34
Using libscg version 'schily-0.8'.
cdrecord: No target found.
localhost linux # cdrdao scanbus
Cdrdao version 1.2.1 - (C) Andreas Mueller <andreas@daneb.de>
  SCSI interface library - (C) Joerg Schilling
  Paranoia DAE library - (C) Monty

Check http://cdrdao.sourceforge.net/drives.html#dt for current driver tables.

Using libscg version 'schily-0.8'

ATA:0,1,0            ASUS    , CD-S520/A5      , 1.1