Comprei recentemente uma unidade flash SanDisk Ultra USB 3.0 de 16GB que possui velocidades de leitura de 80 MB / s, mas quando conecto ao notebook Lenovo G500s (USB 3.0 habilitado) com o Windows 8 Core, ele atinge apenas 44 MB / s (leia) e 10 MB / s (escrever)
O que eu tentei:
Examinei os fóruns de suporte da Lenovo e outros fóruns e descobri que o driver USB 3.0 no Windows 8 é fornecido pela própria Microsoft (eles se referiam a ele como "driver da caixa de entrada") e é instalado automaticamente enquanto o Windows é configurado .
Olhei no Gerenciador de dispositivos e confirmei que Intel USB 3.0 eXtensible Host Controller - 0100 (Microsoft) está sendo exibido e que os drivers mais recentes já foram instalados pelo Windows Update.
Eu removi todos os dispositivos USB Root Hub , reiniciei o computador e reconectei a unidade flash. Sem sorte.
Eu verifiquei a conexão da unidade flash em Devices in Settings -> Change PC Settings e ela ainda mostra O dispositivo pode funcionar mais rápido quando conectado ao USB 3.0
Eu li esta postagem do blog e baixou o Visualizador de árvore de dispositivos USB que é muito semelhante ao USBView.exe, uma ferramenta de depuração encontrada no Windows Driver Kit (WDK) e usada para reunir mais informações sobre o modo de operação da unidade flash e eu tenho isso:
=========================== USB Port2 ===========================
Connection Status : Device is connected
Port Chain : 2-2
Supported Protocols : 0x03 (1.1, 2.0)
Properties : 0x01
IsUserConnectable : yes
PortIsDebugCapable : no
ConnectionIndex : 2
CompanionIndex : 0
CompanionHubSymLnk : USB#ROOT_HUB30#4&d858888&3&0#{f18a0e88-c30c-11d0-8815-00a0c906bed8}
CompanionPortNumber : 6
======================== USB Device ========================
+++++++++++++++++ Device Information ++++++++++++++++++
Device Description : USB Mass Storage Device
Device ID : USB\VID_0781&PID_5581\SERIALNUMBERXXXX
Driver KeyName : {36fc9e60-c465-11cf-8056-444553540000} =========================== USB Port5 ===========================
Connection Status : Device is connected
Port Chain : 2-5
Supported Protocols : 0x04 (3.0)
Properties : 0x01
IsUserConnectable : yes
PortIsDebugCapable : no
ConnectionIndex : 5
CompanionIndex : 0
CompanionHubSymLnk : USB#ROOT_HUB30#4&d858888&3&0#{f18a0e88-c30c-11d0-8815-00a0c906bed8}
CompanionPortNumber : 1
======================== USB Device ========================
+++++++++++++++++ Device Information ++++++++++++++++++
Device Description : USB Mass Storage Device
Device ID : USB\VID_1058&PID_1140\SERIALNUMBERSERIALNUMBER
Driver KeyName : {36fc9e60-c465-11cf-8056-444553540000} =========================== USB Port2 ===========================
Connection Status : Device is connected
Port Chain : 2-2
Supported Protocols : 0x03 (1.1, 2.0)
Properties : 0x01
IsUserConnectable : yes
PortIsDebugCapable : no
ConnectionIndex : 2
CompanionIndex : 0
CompanionHubSymLnk : USB#ROOT_HUB30#4&d858888&3&0#{f18a0e88-c30c-11d0-8815-00a0c906bed8}
CompanionPortNumber : 6
======================== USB Device ========================
+++++++++++++++++ Device Information ++++++++++++++++++
Device Description : USB Mass Storage Device
Device ID : USB\VID_0781&PID_5581\SERIALNUMBERXXXX
Driver KeyName : {36fc9e60-c465-11cf-8056-444553540000} =========================== USB Port5 ===========================
Connection Status : Device is connected
Port Chain : 2-5
Supported Protocols : 0x04 (3.0)
Properties : 0x01
IsUserConnectable : yes
PortIsDebugCapable : no
ConnectionIndex : 5
CompanionIndex : 0
CompanionHubSymLnk : USB#ROOT_HUB30#4&d858888&3&0#{f18a0e88-c30c-11d0-8815-00a0c906bed8}
CompanionPortNumber : 1
======================== USB Device ========================
+++++++++++++++++ Device Information ++++++++++++++++++
Device Description : USB Mass Storage Device
Device ID : USB\VID_1058&PID_1140\SERIALNUMBERSERIALNUMBER
Driver KeyName : {36fc9e60-c465-11cf-8056-444553540000}%pre%12 (GUID_DEVCLASS_USB)
Driver : C:\windows\System32\drivers\USBSTOR.SYS (Version: 6.2.9200.16384 Date: 2012-07-26)
Legacy BusType : PNPBus
Class : USB
Service : USBSTOR
Enumerator : USB
Location Info : Port_#0005.Hub_#0003
Location IDs : PCIROOT(0)#PCI(1400)#USBROOT(0)#USB(5)
Container ID : {759f9168-715a-5e4b-9219-04e2297d996d}
Manufacturer Info : Compatible USB storage device
Capabilities : Removable, UniqueID, SurpriseRemovalOK
Address : 5
Problem Code : 0
Power State : D0 (supported: D0, D3, wake from D0)
Child Device 1 : WD SES Device
Device ID : USBSTOR\OTHER&VEN_WD&PROD_SES_DEVICE&REV_1022\SERIALNUMBERSERIALNUMBER&1
Class : WDC_SAM
Child Device 2 : Disk drive
Device ID : USBSTOR\DISK&VEN_WD&PROD_MY_BOOK_1140&REV_1022\SERIALNUMBERSERIALNUMBER&0
Class : DiskDrive
Volume 1 : \?\Volume{ba5887d4-7abf-11e3-be7b-48d2243b0595}\
Kernel Name : \Device\HarddiskVolume8
Mountpoint : F:\
Volume 2 : \?\Volume{ba5887d5-7abf-11e3-be7b-48d2243b0595}\
Kernel Name : \Device\HarddiskVolume9
Mountpoint : G:\
---------------- Connection Information ---------------
Connection Index : 0x05
Connection Status : 0x01 (DeviceConnected)
Current Config Value : 0x01
Device Address : 0x01
Is Hub : 0x00 (no)
Number Of Open Pipes : 0x02 (2)
Device Bus Speed : 0x03 (SuperSpeed)
Pipe0ScheduleOffset : 0x00 (0)
Pipe1ScheduleOffset : 0x00 (0)
------------------ Device Descriptor ------------------
bLength : 0x12 (18 bytes)
bDescriptorType : 0x01 (Device Descriptor)
bcdUSB : 0x300 (USB Version 3.00)
bDeviceClass : 0x00 (defined by the interface descriptors)
bDeviceSubClass : 0x00
bDeviceProtocol : 0x00
bMaxPacketSize0 : 0x09 (9 bytes)
idVendor : 0x1058 (Western Digital Technologies, Inc.)
idProduct : 0x1140
bcdDevice : 0x1022
iManufacturer : 0x01
Language 0x0409 : "Western Digital"
iProduct : 0x02
Language 0x0409 : "My Book 1140"
iSerialNumber : 0x05
Language 0x0409 : "SERIALNUMBERSERIALNUMBER"
bNumConfigurations : 0x01
-------------- Configuration Descriptor ---------------
bLength : 0x09 (9 bytes)
bDescriptorType : 0x02 (Configuration Descriptor)
wTotalLength : 0x002C (44 bytes)
bNumInterfaces : 0x01
bConfigurationValue : 0x01
iConfiguration : 0x04
Language 0x0409 : "USB Mass Storage"
bmAttributes : 0xC0 (Bus Powered, Self Powered)
MaxPower : 0x01 (8 mA)
---------------- Interface Descriptor -----------------
bLength : 0x09 (9 bytes)
bDescriptorType : 0x04 (Interface Descriptor)
bInterfaceNumber : 0x00
bAlternateSetting : 0x00
bNumEndpoints : 0x02
bInterfaceClass : 0x08 (Mass Storage)
bInterfaceSubClass : 0x06 (SCSI transparent command set)
bInterfaceProtocol : 0x50 (BulkOnly Transport)
iInterface : 0x06
Language 0x0409 : "MSC Bulk-Only Transport"
----------------- Endpoint Descriptor -----------------
bLength : 0x07 (7 bytes)
bDescriptorType : 0x05 (Endpoint Descriptor)
bEndpointAddress : 0x81 (Direction=IN EndpointID=1)
bmAttributes : 0x02 (TransferType=Bulk)
wMaxPacketSize : 0x400
bInterval : 0x00 (never NAKs)
------ SuperSpeed Endpoint Companion Descriptor -------
bLength : 0x06 (6 bytes)
bDescriptorType : 0x30
bMaxBurst : 0x0F (up to 16 packets per burst)
bmAttributes : 0x00 (The bulk endpoint does not define streams)
wBytesPerInterval : 0x0000
----------------- Endpoint Descriptor -----------------
bLength : 0x07 (7 bytes)
bDescriptorType : 0x05 (Endpoint Descriptor)
bEndpointAddress : 0x02 (Direction=OUT EndpointID=2)
bmAttributes : 0x02 (TransferType=Bulk)
wMaxPacketSize : 0x400
bInterval : 0x00 (never NAKs)
------ SuperSpeed Endpoint Companion Descriptor -------
bLength : 0x06 (6 bytes)
bDescriptorType : 0x30
bMaxBurst : 0x0F (up to 16 packets per burst)
bmAttributes : 0x00 (The bulk endpoint does not define streams)
wBytesPerInterval : 0x0000
-------- Binary Object Store (BOS) Descriptor ---------
bLength : 0x05 (5 bytes)
bDescriptorType : 0x0F
wTotalLength : 0x0016
bNumDeviceCaps : 0x02
------------- USB 2.0 Extension Descriptor ------------
bLength : 0x07 (7 bytes)
bDescriptorType : 0x10
bDevCapabilityType : 0x02 (USB 2.0 Extension)
bmAttributes : 0x02
LPMCapable : 1 (Link Power Management protocol is supported)
BESLAndAlternateHIRD : 0 (BESL & Alternate HIRD definitions are not supported)
BaselineBESLValid : 0 (not valid)
DeepBESLValid : 0 (not valid)
BaselineBESL : 0
DeepBESL : 0
----- SuperSpeed USB Device Capability Descriptor -----
bLength : 0x0A (10 bytes)
bDescriptorType : 0x10
bDevCapabilityType : 0x03
bmAttributes : 0x00
wSpeedsSupported : 0x0E (Full-Speed, High-Speed, SuperSpeed)
bFunctionalitySupport : 0x01 (lowest speed is 'full-speed')
bU1DevExitLat : 0x0A (less than 10 µs)
wU2DevExitLat : 0x0020 (less than 32 µs)
10 (GUID_DEVCLASS_USB)
Driver : C:\windows\System32\drivers\USBSTOR.SYS (Version: 6.2.9200.16384 Date: 2012-07-26)
Legacy BusType : PNPBus
Class : USB
Service : USBSTOR
Enumerator : USB
Location Info : Port_#0002.Hub_#0003
Location IDs : PCIROOT(0)#PCI(1400)#USBROOT(0)#USB(2)
Container ID : {8aa21585-82cf-5864-9c87-67b72dcb8f0f}
Manufacturer Info : Compatible USB storage device
Capabilities : Removable, UniqueID, SurpriseRemovalOK
Address : 2
Problem Code : 0
Power State : D0 (supported: D0, D3, wake from D0)
Child Device 1 : Disk drive
Device ID : USBSTOR\DISK&VEN_SANDISK&PROD_SANDISK_ULTRA&REV_PMAP\SERIALNUMBERXXXX&0
Class : DiskDrive
Volume : \?\Volume{7db282d8-79d9-11e3-be77-48d2243b0595}\
Kernel Name : \Device\HarddiskVolume14
Mountpoint : F:\
---------------- Connection Information ---------------
Connection Index : 0x02
Connection Status : 0x01 (DeviceConnected)
Current Config Value : 0x01
Device Address : 0x04
Is Hub : 0x00 (no)
Number Of Open Pipes : 0x02 (2)
Device Bus Speed : 0x02 (High-Speed)
Pipe0ScheduleOffset : 0x00 (0)
Pipe1ScheduleOffset : 0x00 (0)
------------------ Device Descriptor ------------------
bLength : 0x12 (18 bytes)
bDescriptorType : 0x01 (Device Descriptor)
bcdUSB : 0x210 (USB Version 2.10)
bDeviceClass : 0x00 (defined by the interface descriptors)
bDeviceSubClass : 0x00
bDeviceProtocol : 0x00
bMaxPacketSize0 : 0x40 (64 bytes)
idVendor : 0x0781 (SanDisk Corporation)
idProduct : 0x5581
bcdDevice : 0x110
iManufacturer : 0x01
Language 0x0409 : "SanDisk"
iProduct : 0x02
Language 0x0409 : "SanDisk Ultra"
iSerialNumber : 0x03
Language 0x0409 : "SERIALNUMBERXXXX"
bNumConfigurations : 0x01
-------------- Configuration Descriptor ---------------
bLength : 0x09 (9 bytes)
bDescriptorType : 0x02 (Configuration Descriptor)
wTotalLength : 0x0020 (32 bytes)
bNumInterfaces : 0x01
bConfigurationValue : 0x01
iConfiguration : 0x00
bmAttributes : 0x80 (Bus Powered)
MaxPower : 0x96 (300 mA)
---------------- Interface Descriptor -----------------
bLength : 0x09 (9 bytes)
bDescriptorType : 0x04 (Interface Descriptor)
bInterfaceNumber : 0x00
bAlternateSetting : 0x00
bNumEndpoints : 0x02
bInterfaceClass : 0x08 (Mass Storage)
bInterfaceSubClass : 0x06 (SCSI transparent command set)
bInterfaceProtocol : 0x50 (BulkOnly Transport)
iInterface : 0x00
----------------- Endpoint Descriptor -----------------
bLength : 0x07 (7 bytes)
bDescriptorType : 0x05 (Endpoint Descriptor)
bEndpointAddress : 0x81 (Direction=IN EndpointID=1)
bmAttributes : 0x02 (TransferType=Bulk)
wMaxPacketSize : 0x200 (max 512 bytes)
bInterval : 0x00 (never NAKs)
----------------- Endpoint Descriptor -----------------
bLength : 0x07 (7 bytes)
bDescriptorType : 0x05 (Endpoint Descriptor)
bEndpointAddress : 0x02 (Direction=OUT EndpointID=2)
bmAttributes : 0x02 (TransferType=Bulk)
wMaxPacketSize : 0x200 (max 512 bytes)
bInterval : 0x00 (never NAKs)
-------- Binary Object Store (BOS) Descriptor ---------
bLength : 0x05 (5 bytes)
bDescriptorType : 0x0F
wTotalLength : 0x0016
bNumDeviceCaps : 0x02
------------- USB 2.0 Extension Descriptor ------------
bLength : 0x07 (7 bytes)
bDescriptorType : 0x10
bDevCapabilityType : 0x02 (USB 2.0 Extension)
bmAttributes : 0x02
LPMCapable : 1 (Link Power Management protocol is supported)
BESLAndAlternateHIRD : 0 (BESL & Alternate HIRD definitions are not supported)
BaselineBESLValid : 0 (not valid)
DeepBESLValid : 0 (not valid)
BaselineBESL : 0
DeepBESL : 0
----- SuperSpeed USB Device Capability Descriptor -----
bLength : 0x0A (10 bytes)
bDescriptorType : 0x10
bDevCapabilityType : 0x03
bmAttributes : 0x00
wSpeedsSupported : 0x0E (Full-Speed, High-Speed, SuperSpeed)
bFunctionalitySupport : 0x02 (lowest speed is 'high-speed')
bU1DevExitLat : 0x0A (less than 10 µs)
wU2DevExitLat : 0x07FF (less than 2047 µs)
12 (GUID_DEVCLASS_USB)
Driver : C:\windows\System32\drivers\USBSTOR.SYS (Version: 6.2.9200.16384 Date: 2012-07-26)
Legacy BusType : PNPBus
Class : USB
Service : USBSTOR
Enumerator : USB
Location Info : Port_#0005.Hub_#0003
Location IDs : PCIROOT(0)#PCI(1400)#USBROOT(0)#USB(5)
Container ID : {759f9168-715a-5e4b-9219-04e2297d996d}
Manufacturer Info : Compatible USB storage device
Capabilities : Removable, UniqueID, SurpriseRemovalOK
Address : 5
Problem Code : 0
Power State : D0 (supported: D0, D3, wake from D0)
Child Device 1 : WD SES Device
Device ID : USBSTOR\OTHER&VEN_WD&PROD_SES_DEVICE&REV_1022\SERIALNUMBERSERIALNUMBER&1
Class : WDC_SAM
Child Device 2 : Disk drive
Device ID : USBSTOR\DISK&VEN_WD&PROD_MY_BOOK_1140&REV_1022\SERIALNUMBERSERIALNUMBER&0
Class : DiskDrive
Volume 1 : \?\Volume{ba5887d4-7abf-11e3-be7b-48d2243b0595}\
Kernel Name : \Device\HarddiskVolume8
Mountpoint : F:\
Volume 2 : \?\Volume{ba5887d5-7abf-11e3-be7b-48d2243b0595}\
Kernel Name : \Device\HarddiskVolume9
Mountpoint : G:\
---------------- Connection Information ---------------
Connection Index : 0x05
Connection Status : 0x01 (DeviceConnected)
Current Config Value : 0x01
Device Address : 0x01
Is Hub : 0x00 (no)
Number Of Open Pipes : 0x02 (2)
Device Bus Speed : 0x03 (SuperSpeed)
Pipe0ScheduleOffset : 0x00 (0)
Pipe1ScheduleOffset : 0x00 (0)
------------------ Device Descriptor ------------------
bLength : 0x12 (18 bytes)
bDescriptorType : 0x01 (Device Descriptor)
bcdUSB : 0x300 (USB Version 3.00)
bDeviceClass : 0x00 (defined by the interface descriptors)
bDeviceSubClass : 0x00
bDeviceProtocol : 0x00
bMaxPacketSize0 : 0x09 (9 bytes)
idVendor : 0x1058 (Western Digital Technologies, Inc.)
idProduct : 0x1140
bcdDevice : 0x1022
iManufacturer : 0x01
Language 0x0409 : "Western Digital"
iProduct : 0x02
Language 0x0409 : "My Book 1140"
iSerialNumber : 0x05
Language 0x0409 : "SERIALNUMBERSERIALNUMBER"
bNumConfigurations : 0x01
-------------- Configuration Descriptor ---------------
bLength : 0x09 (9 bytes)
bDescriptorType : 0x02 (Configuration Descriptor)
wTotalLength : 0x002C (44 bytes)
bNumInterfaces : 0x01
bConfigurationValue : 0x01
iConfiguration : 0x04
Language 0x0409 : "USB Mass Storage"
bmAttributes : 0xC0 (Bus Powered, Self Powered)
MaxPower : 0x01 (8 mA)
---------------- Interface Descriptor -----------------
bLength : 0x09 (9 bytes)
bDescriptorType : 0x04 (Interface Descriptor)
bInterfaceNumber : 0x00
bAlternateSetting : 0x00
bNumEndpoints : 0x02
bInterfaceClass : 0x08 (Mass Storage)
bInterfaceSubClass : 0x06 (SCSI transparent command set)
bInterfaceProtocol : 0x50 (BulkOnly Transport)
iInterface : 0x06
Language 0x0409 : "MSC Bulk-Only Transport"
----------------- Endpoint Descriptor -----------------
bLength : 0x07 (7 bytes)
bDescriptorType : 0x05 (Endpoint Descriptor)
bEndpointAddress : 0x81 (Direction=IN EndpointID=1)
bmAttributes : 0x02 (TransferType=Bulk)
wMaxPacketSize : 0x400
bInterval : 0x00 (never NAKs)
------ SuperSpeed Endpoint Companion Descriptor -------
bLength : 0x06 (6 bytes)
bDescriptorType : 0x30
bMaxBurst : 0x0F (up to 16 packets per burst)
bmAttributes : 0x00 (The bulk endpoint does not define streams)
wBytesPerInterval : 0x0000
----------------- Endpoint Descriptor -----------------
bLength : 0x07 (7 bytes)
bDescriptorType : 0x05 (Endpoint Descriptor)
bEndpointAddress : 0x02 (Direction=OUT EndpointID=2)
bmAttributes : 0x02 (TransferType=Bulk)
wMaxPacketSize : 0x400
bInterval : 0x00 (never NAKs)
------ SuperSpeed Endpoint Companion Descriptor -------
bLength : 0x06 (6 bytes)
bDescriptorType : 0x30
bMaxBurst : 0x0F (up to 16 packets per burst)
bmAttributes : 0x00 (The bulk endpoint does not define streams)
wBytesPerInterval : 0x0000
-------- Binary Object Store (BOS) Descriptor ---------
bLength : 0x05 (5 bytes)
bDescriptorType : 0x0F
wTotalLength : 0x0016
bNumDeviceCaps : 0x02
------------- USB 2.0 Extension Descriptor ------------
bLength : 0x07 (7 bytes)
bDescriptorType : 0x10
bDevCapabilityType : 0x02 (USB 2.0 Extension)
bmAttributes : 0x02
LPMCapable : 1 (Link Power Management protocol is supported)
BESLAndAlternateHIRD : 0 (BESL & Alternate HIRD definitions are not supported)
BaselineBESLValid : 0 (not valid)
DeepBESLValid : 0 (not valid)
BaselineBESL : 0
DeepBESL : 0
----- SuperSpeed USB Device Capability Descriptor -----
bLength : 0x0A (10 bytes)
bDescriptorType : 0x10
bDevCapabilityType : 0x03
bmAttributes : 0x00
wSpeedsSupported : 0x0E (Full-Speed, High-Speed, SuperSpeed)
bFunctionalitySupport : 0x01 (lowest speed is 'full-speed')
bU1DevExitLat : 0x0A (less than 10 µs)
wU2DevExitLat : 0x0020 (less than 32 µs)
10 (GUID_DEVCLASS_USB)
Driver : C:\windows\System32\drivers\USBSTOR.SYS (Version: 6.2.9200.16384 Date: 2012-07-26)
Legacy BusType : PNPBus
Class : USB
Service : USBSTOR
Enumerator : USB
Location Info : Port_#0002.Hub_#0003
Location IDs : PCIROOT(0)#PCI(1400)#USBROOT(0)#USB(2)
Container ID : {8aa21585-82cf-5864-9c87-67b72dcb8f0f}
Manufacturer Info : Compatible USB storage device
Capabilities : Removable, UniqueID, SurpriseRemovalOK
Address : 2
Problem Code : 0
Power State : D0 (supported: D0, D3, wake from D0)
Child Device 1 : Disk drive
Device ID : USBSTOR\DISK&VEN_SANDISK&PROD_SANDISK_ULTRA&REV_PMAP\SERIALNUMBERXXXX&0
Class : DiskDrive
Volume : \?\Volume{7db282d8-79d9-11e3-be77-48d2243b0595}\
Kernel Name : \Device\HarddiskVolume14
Mountpoint : F:\
---------------- Connection Information ---------------
Connection Index : 0x02
Connection Status : 0x01 (DeviceConnected)
Current Config Value : 0x01
Device Address : 0x04
Is Hub : 0x00 (no)
Number Of Open Pipes : 0x02 (2)
Device Bus Speed : 0x02 (High-Speed)
Pipe0ScheduleOffset : 0x00 (0)
Pipe1ScheduleOffset : 0x00 (0)
------------------ Device Descriptor ------------------
bLength : 0x12 (18 bytes)
bDescriptorType : 0x01 (Device Descriptor)
bcdUSB : 0x210 (USB Version 2.10)
bDeviceClass : 0x00 (defined by the interface descriptors)
bDeviceSubClass : 0x00
bDeviceProtocol : 0x00
bMaxPacketSize0 : 0x40 (64 bytes)
idVendor : 0x0781 (SanDisk Corporation)
idProduct : 0x5581
bcdDevice : 0x110
iManufacturer : 0x01
Language 0x0409 : "SanDisk"
iProduct : 0x02
Language 0x0409 : "SanDisk Ultra"
iSerialNumber : 0x03
Language 0x0409 : "SERIALNUMBERXXXX"
bNumConfigurations : 0x01
-------------- Configuration Descriptor ---------------
bLength : 0x09 (9 bytes)
bDescriptorType : 0x02 (Configuration Descriptor)
wTotalLength : 0x0020 (32 bytes)
bNumInterfaces : 0x01
bConfigurationValue : 0x01
iConfiguration : 0x00
bmAttributes : 0x80 (Bus Powered)
MaxPower : 0x96 (300 mA)
---------------- Interface Descriptor -----------------
bLength : 0x09 (9 bytes)
bDescriptorType : 0x04 (Interface Descriptor)
bInterfaceNumber : 0x00
bAlternateSetting : 0x00
bNumEndpoints : 0x02
bInterfaceClass : 0x08 (Mass Storage)
bInterfaceSubClass : 0x06 (SCSI transparent command set)
bInterfaceProtocol : 0x50 (BulkOnly Transport)
iInterface : 0x00
----------------- Endpoint Descriptor -----------------
bLength : 0x07 (7 bytes)
bDescriptorType : 0x05 (Endpoint Descriptor)
bEndpointAddress : 0x81 (Direction=IN EndpointID=1)
bmAttributes : 0x02 (TransferType=Bulk)
wMaxPacketSize : 0x200 (max 512 bytes)
bInterval : 0x00 (never NAKs)
----------------- Endpoint Descriptor -----------------
bLength : 0x07 (7 bytes)
bDescriptorType : 0x05 (Endpoint Descriptor)
bEndpointAddress : 0x02 (Direction=OUT EndpointID=2)
bmAttributes : 0x02 (TransferType=Bulk)
wMaxPacketSize : 0x200 (max 512 bytes)
bInterval : 0x00 (never NAKs)
-------- Binary Object Store (BOS) Descriptor ---------
bLength : 0x05 (5 bytes)
bDescriptorType : 0x0F
wTotalLength : 0x0016
bNumDeviceCaps : 0x02
------------- USB 2.0 Extension Descriptor ------------
bLength : 0x07 (7 bytes)
bDescriptorType : 0x10
bDevCapabilityType : 0x02 (USB 2.0 Extension)
bmAttributes : 0x02
LPMCapable : 1 (Link Power Management protocol is supported)
BESLAndAlternateHIRD : 0 (BESL & Alternate HIRD definitions are not supported)
BaselineBESLValid : 0 (not valid)
DeepBESLValid : 0 (not valid)
BaselineBESL : 0
DeepBESL : 0
----- SuperSpeed USB Device Capability Descriptor -----
bLength : 0x0A (10 bytes)
bDescriptorType : 0x10
bDevCapabilityType : 0x03
bmAttributes : 0x00
wSpeedsSupported : 0x0E (Full-Speed, High-Speed, SuperSpeed)
bFunctionalitySupport : 0x02 (lowest speed is 'high-speed')
bU1DevExitLat : 0x0A (less than 10 µs)
wU2DevExitLat : 0x07FF (less than 2047 µs)
Em seguida, conectei meu disco rígido WD de 2 TB, alimentado por adaptador externo, que suporta USB 3.0 e foi capaz de se conectar no modo USB 3.0 sem problemas. Aqui está a saída do Visualizador de Árvore de Dispositivos USB para o WD HDD:
%pre%Ambos os dispositivos foram conectados à mesma porta USB 3.0. Qual poderia ser o problema aqui?
Acho que finalmente tenho a resposta para minha pergunta. Parece que a unidade flash USB não foi conectada corretamente às portas USB, mesmo que tenha sido totalmente conectada à porta USB.
A aplicação de um pouco de força extra ao conectar a unidade flash parece ter corrigido o problema para mim.
Encontrou o mesmo problema em uma unidade USB 3.0 de 32 GB (laptop Win 8.1 com 4 portas USB 3.0). Leia em outro lugar que conectar muito lentamente produzirá esse efeito (lê como conexão 0x02 de alta velocidade em vez de SuperSpeed 0x03).
Eu removi a unidade (usando a janela pop-up de ejeção), esperei alguns segundos e reconectei rapidamente . A conexão agora é lida corretamente como SuperSpeed.
Aparentemente, uma unidade pode ser registrada como USB 2.0 antes que conectores USB 3.0 adicionais se conectem se inseridos muito lentamente.
Se registrado como Alta velocidade ou Supervelocidade, o wSpeedsSupported parâmetro mostrou wSpeedsSupported: 0x0E (velocidade máxima, alta velocidade, super velocidade)
indicando que SuperSpeed foi atingível.
O MaxPower agora lê como 504ma (era 300mA quando conectado no modo de alta velocidade).
Eu tenho o mesmo problema com o EAGET 32GB USB 3.0 (modelo V90). Meu Acer VN7-791G reconhece SuperSpeed para esta unidade somente após a reinicialização limpa. Não é possível ativar o USB suspender, não tente isso. Tem dual USB / microUSB com conector OTG, o tablet com USB 3.0 não pode usá-lo em USB 3.0 também. O mais estranho para mim, é que no USBView ele mostra que o dispositivo está conectado ao xHCI em alta velocidade, mas capaz de realizar em SuperSpeed. Então, o Windows vê os descritores corretos, mas de alguma forma os ignora.
Devo observar que nem todos os hosts USB 3.0 têm um problema com esse flash drive específico. Algumas placas-mãe e laptops se conectam na SS imediatamente, e eu não diria que posso colocá-lo no soquete mais rápido ou mais limpo.
USBView anexado
PS OK, outro cartaz mencionou uma mensagem de instalação do dispositivo aparecendo sempre que ele trocava as portas. Isso me fez pensar que você poderia desinstalar um driver para armazenamento em massa USB, Rescan , e a unidade flash é reconhecida como USB 3.0. Parece um bug do Windows para mim (usando o Windows 10 mais recente com todas as atualizações disponíveis).
Eu descobri uma correção temporária para o problema. Parece que sempre que mantenho a unidade flash USB 3.0 conectada ao notebook antes de inicializar no Windows, ele funciona no modo USB 3.0 SuperSpeed.
Se eu já for inicializado no Windows, coloco meu notebook no modo de suspensão, conecto o pendrive e o acordo e, de alguma forma, isso faz com que o pen drive funcione também no modo USB 3.0.
No entanto, se eu remover a unidade flash e reinseri-la, ela retornará ao modo USB 2.0 HighSpeed novamente.
EDIT: Isso parece loucura, mas eu encontrei uma outra maneira de obter o meu pen drive para se conectar no modo USB 3.0. Quando a minha unidade flash não está conectada no modo SuperSpeed, eu a retiro da porta USB 3.0, a conecto novamente à porta USB 2.0 do meu notebook e, em seguida, a desanexo e a conecto novamente a qualquer uma das duas portas USB 3.0. portas e fazendo isso de alguma forma, ele consegue trabalhar novamente no modo USB 3.0.
A outra coisa estranha que acontece aqui é que a "Device Setup" aparece toda vez que eu alterno entre as portas USB 3.0 e USB 2.0