Thank you but Wireshark did the trick!
I managed to get some packets but now it's difficult for me understand them.... Some of them:
No. Time Source Destination Protocol Length Info
60 0.514734 2.4.1 host USB 31 URB_INTERRUPT in
Frame 60: 31 bytes on wire (248 bits), 31 bytes captured (248 bits) on interface 0
USB URB
Leftover Capture Data: 00ff0200
No. Time Source Destination Protocol Length Info
61 0.530332 host 2.2.1 USBMS 58 SCSI: Test Unit Ready LUN: 0x00
Frame 61: 58 bytes on wire (464 bits), 58 bytes captured (464 bits) on interface 0
USB URB
USB Mass Storage
SCSI CDB Test Unit Ready
No. Time Source Destination Protocol Length Info
62 0.530332 host 2.6.2 USBMS 58 SCSI: Test Unit Ready LUN: 0x00
Frame 62: 58 bytes on wire (464 bits), 58 bytes captured (464 bits) on interface 0
USB URB
USB Mass Storage
SCSI CDB Test Unit Ready
No. Time Source Destination Protocol Length Info
63 0.530332 2.6.1 host USBMS 40
Frame 63: 40 bytes on wire (320 bits), 40 bytes captured (320 bits) on interface 0
USB URB
USB Mass Storage
No. Time Source Destination Protocol Length Info
64 0.530332 2.2.2 host USBMS 40
Frame 64: 40 bytes on wire (320 bits), 40 bytes captured (320 bits) on interface 0
USB URB
USB Mass Storage
No. Time Source Destination Protocol Length Info
65 0.530332 host 2.2.1 USBMS 58 SCSI: Request Sense LUN: 0x00
Frame 65: 58 bytes on wire (464 bits), 58 bytes captured (464 bits) on interface 0
USB URB
USB Mass Storage
SCSI CDB Request Sense
No. Time Source Destination Protocol Length Info
66 0.530332 2.2.2 host USB 45 URB_BULK in
Frame 66: 45 bytes on wire (360 bits), 45 bytes captured (360 bits) on interface 0
USB URB
Leftover Capture Data: 700002000000000a000000003a0000000000
No. Time Source Destination Protocol Length Info
67 0.530332 2.2.2 host USBMS 40
Frame 67: 40 bytes on wire (320 bits), 40 bytes captured (320 bits) on interface 0
USB URB
USB Mass Storage
No. Time Source Destination Protocol Length Info
68 0.530332 host 2.2.1 USBMS 58 SCSI: Test Unit Ready LUN: 0x01
Frame 68: 58 bytes on wire (464 bits), 58 bytes captured (464 bits) on interface 0
USB URB
USB Mass Storage
SCSI CDB Test Unit Ready
No. Time Source Destination Protocol Length Info
69 0.530332 2.2.2 host USBMS 40
Frame 69: 40 bytes on wire (320 bits), 40 bytes captured (320 bits) on interface 0
USB URB
USB Mass Storage
No. Time Source Destination Protocol Length Info
70 0.530332 host 2.2.1 USBMS 58 SCSI: Request Sense LUN: 0x01
Frame 70: 58 bytes on wire (464 bits), 58 bytes captured (464 bits) on interface 0
USB URB
USB Mass Storage
SCSI CDB Request Sense
"URB_INTERRUPT in" maybe it's a sort of "stand by"; i don't know what "SCSI: Test Unit Ready LUN: 0x00 " stand for and probably "URB_BULK in" it's when the software try to interact with my device.
What can i do now?