bus powered or not? port on WD 1TB minidrive?

$ sudo dmesg

. . .

[ 9711.409069] usb 1-8: new high-speed USB device number 2 using ehci_hcd
[ 9711.533510] usb 1-8: New USB device found, idVendor=1058, idProduct=0740
[ 9711.533513] usb 1-8: New USB device strings: Mfr=1, Product=2, SerialNumber=5
[ 9711.533516] usb 1-8: Product: My Passport 0740
[ 9711.533519] usb 1-8: Manufacturer: Western Digital
[ 9711.533521] usb 1-8: SerialNumber: 575844314539315059434132
[ 9711.534636] scsi4 : usb-storage 1-8:1.0
[ 9712.536427] scsi 4:0:0:0: Direct-Access     WD       My Passport 0740 1003 PQ: 0 ANSI: 6
[ 9712.536611] sd 4:0:0:0: Attached scsi generic sg2 type 0
[ 9712.537036] scsi 4:0:0:1: Enclosure         WD       SES Device       1003 PQ: 0 ANSI: 6
[ 9712.537154] scsi 4:0:0:1: Attached scsi generic sg3 type 13
[ 9712.540537] sd 4:0:0:0: [sdb] Spinning up disk………………………………………………………………………………………….not responding…
[ 9826.901066] sd 4:0:0:0: [sdb] READ CAPACITY failed
[ 9826.901072] sd 4:0:0:0: [sdb]  Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[ 9826.901076] sd 4:0:0:0: [sdb]  Sense Key : Not Ready [current]
[ 9826.901080] sd 4:0:0:0: [sdb]  Add. Sense: Logical unit is in process of becoming ready
[ 9840.305729] usb 1-8: USB disconnect, device number 2

. . .

$ sudo lsusb
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 006: ID 1058:0740 Western Digital Technologies, Inc. My Passport 1TB

Bus 001 Device 006: ID 1058:0740 Western Digital Technologies, Inc. My Passport 1TB
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.10
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0
  bDeviceProtocol         0
  bMaxPacketSize0        64
  idVendor           0x1058 Western Digital Technologies, Inc.
  idProduct          0x0740 My Passport 1TB
  bcdDevice           10.03
  iManufacturer           1 Western Digital
  iProduct                2 My Passport 0740
  iSerial                 5 575844314539315059434132
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           32
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          4 USB Mass Storage
    bmAttributes         0x80
      (Bus Powered)
    MaxPower              500mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass         8 Mass Storage
      bInterfaceSubClass      6 SCSI
      bInterfaceProtocol     80 Bulk-Only
      iInterface              6 MSC Bulk-Only Transport
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x02  EP 2 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
Device Status:     0x0000
  (Bus Powered)


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