●USB hub device
bus-power modeで動かしても、self-power modeと主張するのはどうかと思うよ。

External Hub: 000000000000000c#{f18a0e88-c30c-11d0-8815-00a0c906bed8}
Hub Power:               Self Power
Number of Ports:         7
Power switching:         Individual
Compound device:         No
Over-current Protection: Individual

Device Descriptor:
bcdUSB:             0x0110
bDeviceClass:         0x09
bDeviceSubClass:      0x00
bDeviceProtocol:      0x00
bMaxPacketSize0:      0x08 (8)
idVendor:           0x0451 (Texas Instruments)
idProduct:          0x2077
bcdDevice:          0x0100
iManufacturer:        0x00
iProduct:             0x01
0x0409: "General Purpose USB Hub"
0x0409: "General Purpose USB Hub"
0x0409: "General Purpose USB Hub"
iSerialNumber:        0x00
bNumConfigurations:   0x01

ConnectionStatus: DeviceConnected
Current Config Value: 0x01
Device Bus Speed:     Full
Device Address:       0x03
Open Pipes:              1

Endpoint Descriptor:
bEndpointAddress:     0x81
Transfer Type:   Interrupt
wMaxPacketSize:     0x0001 (1)
bInterval:            0xFF

Configuration Descriptor:
wTotalLength:       0x0019
bNumInterfaces:       0x01
bConfigurationValue:  0x01
iConfiguration:       0x01
0x0409: "General Purpose USB Hub"
0x0409: "General Purpose USB Hub"
0x0409: "General Purpose USB Hub"
bmAttributes:         0xE0 (Bus Powered Self Powered Remote Wakeup)
MaxPower:             0x00 (0 Ma)

Interface Descriptor:
bInterfaceNumber:     0x00
bAlternateSetting:    0x00
bNumEndpoints:        0x01
bInterfaceClass:      0x09
bInterfaceSubClass:   0x00
bInterfaceProtocol:   0x00
iInterface:           0x01
0x0409: "General Purpose USB Hub"
0x0409: "General Purpose USB Hub"
0x0409: "General Purpose USB Hub"

Endpoint Descriptor:
bEndpointAddress:     0x81
Transfer Type:   Interrupt
wMaxPacketSize:     0x0001 (1)
bInterval:            0xFF


●LED・オルゴール制御デバイス
USB hub deviceのport #5（#1から数えてる）に接続されている。

Device Descriptor:
bcdUSB:             0x0100
bDeviceClass:         0x00
bDeviceSubClass:      0x00
bDeviceProtocol:      0x00
bMaxPacketSize0:      0x08 (8)
idVendor:           0x04B4 (Cypress Semiconductor)
idProduct:          0xFEF4
bcdDevice:          0x0100
iManufacturer:        0x01
0x0409: "ACROX email HUB"
iProduct:             0x02
0x0409: "ACROX email HUB"
iSerialNumber:        0x00
bNumConfigurations:   0x01

ConnectionStatus: DeviceConnected
Current Config Value: 0x01
Device Bus Speed:      Low
Device Address:       0x04
Open Pipes:              1

Endpoint Descriptor:
bEndpointAddress:     0x81
Transfer Type:   Interrupt
wMaxPacketSize:     0x0005 (5)
bInterval:            0x0A

Configuration Descriptor:
wTotalLength:       0x0022
bNumInterfaces:       0x01
bConfigurationValue:  0x01
iConfiguration:       0x04
0x0409: "TP0005"
0x0409: "TP0005"
bmAttributes:         0xA0 (Bus Powered Remote Wakeup)
MaxPower:             0x32 (100 Ma)

Interface Descriptor:
bInterfaceNumber:     0x00
bAlternateSetting:    0x00
bNumEndpoints:        0x01
bInterfaceClass:      0x03
bInterfaceSubClass:   0x01
bInterfaceProtocol:   0x02
iInterface:           0x04
0x0409: "TP0005"
0x0409: "TP0005"

HID Descriptor:
bcdHID:             0x0100
bCountryCode:         0x00
bNumDescriptors:      0x01
bDescriptorType:      0x22
wDescriptorLength:  0x003F

Endpoint Descriptor:
bEndpointAddress:     0x81
Transfer Type:   Interrupt
wMaxPacketSize:     0x0005 (5)
bInterval:            0x0A