[  239.935239] usb 1-1.2: new high-speed USB device number 6 using dwc_otg
[  240.037391] usb 1-1.2: New USB device found, idVendor=16d0, idProduct=0bd6
[  240.037430] usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[  240.037452] usb 1-1.2: Product: IM200
[  240.037470] usb 1-1.2: Manufacturer: Hyperion Technologies
[  240.037487] usb 1-1.2: SerialNumber: 000000000038
[  240.057873] usb-storage 1-1.2:1.2: USB Mass Storage device detected
[  240.066243] scsi host0: usb-storage 1-1.2:1.2
[  240.177232] cdc_acm 1-1.2:1.0: ttyACM0: USB ACM device
[  240.183242] usbcore: registered new interface driver cdc_acm
[  240.183286] cdc_acm: USB Abstract Control Model driver for USB modems and ISDN adapters
[  241.067042] scsi 0:0:0:0: Direct-Access     ATMEL    Mass Storage MSD 0.01 PQ: 0 ANSI: 6
[  241.071405] sd 0:0:0:0: [sda] 2147483648 4096-byte logical blocks: (8.80 TB/8.00 TiB)
[  241.084740] sd 0:0:0:0: [sda] Write Protect is off
[  241.084802] sd 0:0:0:0: [sda] Mode Sense: 00 00 00 00
[  241.104273] sd 0:0:0:0: [sda] Asking for cache data failed
[  241.104334] sd 0:0:0:0: [sda] Assuming drive cache: write through
[  241.132732] sd 0:0:0:0: Attached scsi generic sg0 type 0
[  241.202013] sd 0:0:0:0: [sda] Attached SCSI removable disk

pi@raspberrypi:~ $ sudo dd if=/dev/sda of=test count=123
123+0 records in
123+0 records out
62976 bytes (63 kB) copied, 0.0250349 s, 2.5 MB/s