>  I bought a USB to SCSI adaptor, Logitec Corp. LUB-SC2

>  sd0 is IBM 4GB narrow SCSI HD. 

 And tryed with KONIKA MO drive. dmesg shows that 'ugen1', not 'umass0'.
Shows no scsibus0 nor sd0.

ugen1 at uhub1 port 1
ugen1: Logitec Corp. USB-SCSI Adapter, rev 2.00/1.10, addr 4

> umass0 at uhub1 port 1 configuration 1 interface 0
> umass0: Logitec Corp. USB-SCSI Adapter, rev 2.00/1.10, addr 4
> umass0: using SCSI over Bulk-Only
> scsibus0 at umass0: 2 targets, 7 luns per target
> scsibus0: waiting 2 seconds for devices to settle...
> sd0 at scsibus0 target 1 lun 0: <IBM, DCAS-34330, S65A> SCSI2 0/direct fixed
> sd0: 66769 GB, 131076 cyl, 22 head, 2 sec, 8467200 bytes/sect x 8467200 sectors
>      ^^^^^^^^
> umass0: Invalid CSW: status 255 > 2
    :


 Here is dmesg of the MO drive use with PCI SCSI card:


siop0 at pci0 dev 14 function 0: Symbios Logic 53c810a (fast scsi)
siop0: interrupting at irq 12
scsibus0 at siop0: 8 targets, 8 luns per target
    :
scsibus0: waiting 2 seconds for devices to settle...
sd0 at scsibus0 target 5 lun 0: <KONICA, OMD-7061, 3.02> SCSI2 7/optical removable
sd0: drive offline
sd0: async, 8-bit transfers

-mochid