Module                  Size  Used by
sr_mod                 11456   0  (autoclean) (unused)
usb-storage            41568   0  (unused)
sg                     22864   0  (unused)
ide-scsi                7392   0 
ide-cd                 26432   0 
cdrom                  29344   0  [sr_mod ide-cd]
scsi_mod               77520   3  [sr_mod usb-storage sg ide-scsi]