Jul 27 06:49:17 x kernel: usb 4-1.8: new high-speed USB device number 4 using ehci-pci
Jul 27 06:49:18 x kernel: usb 4-1.8: New USB device found, idVendor=174c, idProduct=1153, bcdDevice= 0.01
Jul 27 06:49:18 x kernel: usb 4-1.8: New USB device strings: Mfr=2, Product=3, SerialNumber=1
Jul 27 06:49:18 x kernel: usb 4-1.8: Product: AS2115
Jul 27 06:49:18 x kernel: usb 4-1.8: Manufacturer: ASMedia
Jul 27 06:49:18 x kernel: usb 4-1.8: SerialNumber: 00000000000000000000
Jul 27 06:49:18 x kernel: usb-storage 4-1.8:1.0: USB Mass Storage device detected
Jul 27 06:49:18 x kernel: scsi host7: usb-storage 4-1.8:1.0
Jul 27 06:49:18 x mtp-probe[5310]: checking bus 4, device 4: "/sys/devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.8"
Jul 27 06:49:18 x mtp-probe[5310]: bus: 4, device: 4 was not an MTP device
Jul 27 06:49:19 x kernel: scsi 7:0:0:0: Direct-Access     ASMT     2115             0    PQ: 0 ANSI: 6
Jul 27 06:49:19 x kernel: sd 7:0:0:0: Attached scsi generic sg3 type 0
Jul 27 06:49:19 x kernel: sd 7:0:0:0: [sdc] Attached SCSI removable disk


>lsscsi
... 
[7:0:0:0]    disk    ASMT     2115             0     /dev/sdc

>fdisk -l /dev/sdc
fdisk: cannot open /dev/sdc: No medium found

>sg_scan
...
/dev/sg3: scsi7 channel=0 id=0 lun=0 [em]

>sg_modes /dev/sg3
    ASMT      2115              0      peripheral_type: disk [0x0]
Not ready  <=== ?????

>sg_get_config /dev/sg3
  ASMT      2115              0   
  Peripheral device type: disk
Get Configuration command: Illegal request, invalid opcode
    try '-v' option for more information

>sg_get_config -v /dev/sg3
    inquiry cdb: 12 00 00 00 24 00 
  ASMT      2115              0   
  Peripheral device type: disk
    Get Configuration cdb: 46 00 00 00 00 00 00 20 00 00 
get configuration:
Fixed format, current; Sense key: Illegal Request
Additional sense: Invalid command operation code
Get Configuration command: Illegal request, invalid opcode sense key

>sg_map
...
/dev/sg3  /dev/sdc

>sg_opcodes /dev/sg3
  ASMT      2115              0   
  Peripheral device type: disk
Report supported operation codes: Illegal request, invalid opcode

>sg_scan /dev/sg3
/dev/sg3: scsi7 channel=0 id=0 lun=0 [em]

>sg_senddiag /dev/sg3
SEND DIAGNOSTIC, device not ready
  try again with '-vv' for more information

>sg_senddiag -v /dev/sg3
    Send diagnostic cmd: 1d 00 00 00 00 00 
send diagnostic:
Fixed format, current; Sense key: Not Ready
Additional sense: Medium not present
SEND DIAGNOSTIC, device not ready
  try again with '-vv' for more information

>sg_senddiag -vv /dev/sg3
open /dev/sg3 with flags=0x802
    Send diagnostic cmd: 1d 00 00 00 00 00 
    Send diagnostic timeout: 60 seconds
send diagnostic:
Fixed format, current; Sense key: Not Ready
Additional sense: Medium not present
 Raw sense data (in hex):
        70 00 02 00 00 00 00 0a  00 00 00 00 3a 00 00 00
        00 00
SEND DIAGNOSTIC, device not ready