下面是右侧的USB口完整文件，支持USB3.0，速度能达到430MB/S。而左侧不支持USB3.0，写速度16MB/S，读速度40MB/S。   [Port20] : USB Attached SCSI (UAS) 大容量存储设备 Is Port User Connectable: yes Is Port Debug Capable: yes Companion Port Number: 3 Companion Hub Symbolic Link Name: USB#ROOT_HUB30#4&3a2d6bb7&0&0#{f18a0e88-c30c-11d0-8815-00a0c906bed8} Protocols Supported: USB 1.1: no USB 2.0: no USB 3.0: yes Device Power State: PowerDeviceD0 ---===>Device Information<===--- English product name: "Ugreen Storage Device" ConnectionStatus: Current Config Value: 0x01 -> Device Bus Speed: SuperSpeed Device Address: 0x05 Open Pipes: 4 ===>Device Descriptor<=== bLength: 0x12 bDescriptorType: 0x01 bcdUSB: 0x0320 bDeviceClass: 0x00 -> This is an Interface Class Defined Device bDeviceSubClass: 0x00 bDeviceProtocol: 0x00 bMaxPacketSize0: 0x09 = (9) Bytes idVendor: 0x174C = ASMedia Technology Inc. idProduct: 0x1356 bcdDevice: 0x0100 iManufacturer: 0x02 English (United States) " " iProduct: 0x03 English (United States) "Ugreen Storage Device" iSerialNumber: 0x01 English (United States) "5721072100A5" bNumConfigurations: 0x01 ---===>Open Pipes<===--- ===>Endpoint Descriptor<=== bLength: 0x07 bDescriptorType: 0x05 bEndpointAddress: 0x81 -> Direction: IN - EndpointID: 1 bmAttributes: 0x02 -> Bulk Transfer Type wMaxPacketSize: 0x0400 bInterval: 0x00 ===>Endpoint Descriptor<=== bLength: 0x07 bDescriptorType: 0x05 bEndpointAddress: 0x02 -> Direction: OUT - EndpointID: 2 bmAttributes: 0x02 -> Bulk Transfer Type wMaxPacketSize: 0x0400 bInterval: 0x00 ===>Endpoint Descriptor<=== bLength: 0x07 bDescriptorType: 0x05 bEndpointAddress: 0x83 -> Direction: IN - EndpointID: 3 bmAttributes: 0x02 -> Bulk Transfer Type wMaxPacketSize: 0x0400 bInterval: 0x00 ===>Endpoint Descriptor<=== bLength: 0x07 bDescriptorType: 0x05 bEndpointAddress: 0x04 -> Direction: OUT - EndpointID: 4 bmAttributes: 0x02 -> Bulk Transfer Type wMaxPacketSize: 0x0400 bInterval: 0x00 ---===>Full Configuration Descriptor<===--- ===>Configuration Descriptor<=== bLength: 0x09 bDescriptorType: 0x02 wTotalLength: 0x0079 -> Validated bNumInterfaces: 0x01 bConfigurationValue: 0x01 iConfiguration: 0x00 bmAttributes: 0xC0 -> Self Powered MaxPower: 0x00 = 0 mA ===>Interface Descriptor<=== bLength: 0x09 bDescriptorType: 0x04 bInterfaceNumber: 0x00 bAlternateSetting: 0x00 bNumEndpoints: 0x02 bInterfaceClass: 0x08 -> This is a Mass Storage USB Device Interface Class bInterfaceSubClass: 0x06 bInterfaceProtocol: 0x50 iInterface: 0x00 ===>Endpoint Descriptor<=== bLength: 0x07 bDescriptorType: 0x05 bEndpointAddress: 0x81 -> Direction: IN - EndpointID: 1 bmAttributes: 0x02 -> Bulk Transfer Type wMaxPacketSize: 0x0400 bInterval: 0x00 ===>SuperSpeed Endpoint Companion Descriptor<=== bLength: 0x06 bDescriptorType: 0x30 bMaxBurst: 0x0F bmAttributes: 0x00The bulk endpoint does not define streams (MaxStreams == 0) wBytesPerInterval: 0x0000 ===>Endpoint Descriptor<=== bLength: 0x07 bDescriptorType: 0x05 bEndpointAddress: 0x02 -> Direction: OUT - EndpointID: 2 bmAttributes: 0x02 -> Bulk Transfer Type wMaxPacketSize: 0x0400 bInterval: 0x00 ===>SuperSpeed Endpoint Companion Descriptor<=== bLength: 0x06 bDescriptorType: 0x30 bMaxBurst: 0x0F bmAttributes: 0x00The bulk endpoint does not define streams (MaxStreams == 0) wBytesPerInterval: 0x0000 ===>Interface Descriptor<=== bLength: 0x09 bDescriptorType: 0x04 bInterfaceNumber: 0x00 bAlternateSetting: 0x01 bNumEndpoints: 0x04 bInterfaceClass: 0x08 -> This is a Mass Storage USB Device Interface Class bInterfaceSubClass: 0x06 bInterfaceProtocol: 0x62 iInterface: 0x00 ===>Endpoint Descriptor<=== bLength: 0x07 bDescriptorType: 0x05 bEndpointAddress: 0x81 -> Direction: IN - EndpointID: 1 bmAttributes: 0x02 -> Bulk Transfer Type wMaxPacketSize: 0x0400 bInterval: 0x00 ===>SuperSpeed Endpoint Companion Descriptor<=== bLength: 0x06 bDescriptorType: 0x30 bMaxBurst: 0x0F bmAttributes: 0x05 = 32 streams supported wBytesPerInterval: 0x0000 -> This is a Mass Storage USB Device Interface Class ===>Descriptor Hex Dump<=== bLength: 0x04 bDescriptorType: 0x24 04 24 03 00 ===>Endpoint Descriptor<=== bLength: 0x07 bDescriptorType: 0x05 bEndpointAddress: 0x02 -> Direction: OUT - EndpointID: 2 bmAttributes: 0x02 -> Bulk Transfer Type wMaxPacketSize: 0x0400 bInterval: 0x00 ===>SuperSpeed Endpoint Companion Descriptor<=== bLength: 0x06 bDescriptorType: 0x30 bMaxBurst: 0x0F bmAttributes: 0x05 = 32 streams supported wBytesPerInterval: 0x0000 -> This is a Mass Storage USB Device Interface Class ===>Descriptor Hex Dump<=== bLength: 0x04 bDescriptorType: 0x24 04 24 04 00 ===>Endpoint Descriptor<=== bLength: 0x07 bDescriptorType: 0x05 bEndpointAddress: 0x83 -> Direction: IN - EndpointID: 3 bmAttributes: 0x02 -> Bulk Transfer Type wMaxPacketSize: 0x0400 bInterval: 0x00 ===>SuperSpeed Endpoint Companion Descriptor<=== bLength: 0x06 bDescriptorType: 0x30 bMaxBurst: 0x0F bmAttributes: 0x05 = 32 streams supported wBytesPerInterval: 0x0000 -> This is a Mass Storage USB Device Interface Class ===>Descriptor Hex Dump<=== bLength: 0x04 bDescriptorType: 0x24 04 24 02 00 ===>Endpoint Descriptor<=== bLength: 0x07 bDescriptorType: 0x05 bEndpointAddress: 0x04 -> Direction: OUT - EndpointID: 4 bmAttributes: 0x02 -> Bulk Transfer Type wMaxPacketSize: 0x0400 bInterval: 0x00 ===>SuperSpeed Endpoint Companion Descriptor<=== bLength: 0x06 bDescriptorType: 0x30 bMaxBurst: 0x00 bmAttributes: 0x00The bulk endpoint does not define streams (MaxStreams == 0) wBytesPerInterval: 0x0000 -> This is a Mass Storage USB Device Interface Class ===>Descriptor Hex Dump<=== bLength: 0x04 bDescriptorType: 0x24 04 24 01 00 ===>BOS Descriptor<=== bLength: 0x05 bDescriptorType: 0x0F wTotalLength: 0x002A bNumDeviceCaps: 0x03 ===>USB 2.0 Extension Descriptor<=== bLength: 0x07 bDescriptorType: 0x10 bDevCapabilityType: 0x02 bmAttributes: 0x0000F41E -> Supports Link Power Management protocol ===>SuperSpeed USB Device Capability Descriptor<=== bLength: 0x0A bDescriptorType: 0x10 bDevCapabilityType: 0x03 bmAttributes: 0x00 wSpeedsSupported: 0x0E -> Supports full-speed operation -> Supports high-speed operation -> Supports SuperSpeed operation bFunctionalitySupport: 0x01 -> lowest speed = full-speed bU1DevExitLat: 0x0A -> less than 10 micro-seconds wU2DevExitLat: 0x07FF -> less than 2047 micro-seconds ===>Unknown Capability Descriptor<=== bLength: 0x14 bType: 0x14 bDevCapabilityType: 0x0A 00 01 00 00 00 00 11 00 00 30 40 0A 00 B0 40 0A 00

下面是端口完整文件，不是电源问题，已经外接电源了。不是楼上说的插入快慢问题，插入快慢影响速度，听起来真好笑。   [Port1] : USB Attached SCSI (UAS) 大容量存储设备 Is Port User Connectable: yes Is Port Debug Capable: no Companion Port Number: 17 Companion Hub Symbolic Link Name: USB#ROOT_HUB30#4&3a2d6bb7&0&0#{f18a0e88-c30c-11d0-8815-00a0c906bed8} Protocols Supported: USB 1.1: yes USB 2.0: yes USB 3.0: no Device Power State: PowerDeviceD0 ---===>Device Information<===--- English product name: "Ugreen Storage Device" ConnectionStatus: Current Config Value: 0x01 -> Device Bus Speed: High (is SuperSpeedPlus or higher capable) Device Address: 0x04 Open Pipes: 4 ===>Device Descriptor<=== bLength: 0x12 bDescriptorType: 0x01 bcdUSB: 0x0210 bDeviceClass: 0x00 -> This is an Interface Class Defined Device bDeviceSubClass: 0x00 bDeviceProtocol: 0x00 bMaxPacketSize0: 0x40 = (64) Bytes idVendor: 0x174C = ASMedia Technology Inc. idProduct: 0x1356 bcdDevice: 0x0100 iManufacturer: 0x02 English (United States) " " iProduct: 0x03 English (United States) "Ugreen Storage Device" iSerialNumber: 0x01 English (United States) "5721072100A5" bNumConfigurations: 0x01 ---===>Open Pipes<===--- ===>Endpoint Descriptor<=== bLength: 0x07 bDescriptorType: 0x05 bEndpointAddress: 0x81 -> Direction: IN - EndpointID: 1 bmAttributes: 0x02 -> Bulk Transfer Type wMaxPacketSize: 0x0200 = 0x200 max bytes bInterval: 0x00 ===>Endpoint Descriptor<=== bLength: 0x07 bDescriptorType: 0x05 bEndpointAddress: 0x02 -> Direction: OUT - EndpointID: 2 bmAttributes: 0x02 -> Bulk Transfer Type wMaxPacketSize: 0x0200 = 0x200 max bytes bInterval: 0x00 ===>Endpoint Descriptor<=== bLength: 0x07 bDescriptorType: 0x05 bEndpointAddress: 0x83 -> Direction: IN - EndpointID: 3 bmAttributes: 0x02 -> Bulk Transfer Type wMaxPacketSize: 0x0200 = 0x200 max bytes bInterval: 0x00 ===>Endpoint Descriptor<=== bLength: 0x07 bDescriptorType: 0x05 bEndpointAddress: 0x04 -> Direction: OUT - EndpointID: 4 bmAttributes: 0x02 -> Bulk Transfer Type wMaxPacketSize: 0x0200 = 0x200 max bytes bInterval: 0x00 ---===>Full Configuration Descriptor<===--- ===>Configuration Descriptor<=== bLength: 0x09 bDescriptorType: 0x02 wTotalLength: 0x0055 -> Validated bNumInterfaces: 0x01 bConfigurationValue: 0x01 iConfiguration: 0x00 bmAttributes: 0xC0 -> Self Powered MaxPower: 0x00 = 0 mA ===>Interface Descriptor<=== bLength: 0x09 bDescriptorType: 0x04 bInterfaceNumber: 0x00 bAlternateSetting: 0x00 bNumEndpoints: 0x02 bInterfaceClass: 0x08 -> This is a Mass Storage USB Device Interface Class bInterfaceSubClass: 0x06 bInterfaceProtocol: 0x50 iInterface: 0x00 ===>Endpoint Descriptor<=== bLength: 0x07 bDescriptorType: 0x05 bEndpointAddress: 0x81 -> Direction: IN - EndpointID: 1 bmAttributes: 0x02 -> Bulk Transfer Type wMaxPacketSize: 0x0200 = 0x200 max bytes bInterval: 0x00 ===>Endpoint Descriptor<=== bLength: 0x07 bDescriptorType: 0x05 bEndpointAddress: 0x02 -> Direction: OUT - EndpointID: 2 bmAttributes: 0x02 -> Bulk Transfer Type wMaxPacketSize: 0x0200 = 0x200 max bytes bInterval: 0x00 ===>Interface Descriptor<=== bLength: 0x09 bDescriptorType: 0x04 bInterfaceNumber: 0x00 bAlternateSetting: 0x01 bNumEndpoints: 0x04 bInterfaceClass: 0x08 -> This is a Mass Storage USB Device Interface Class bInterfaceSubClass: 0x06 bInterfaceProtocol: 0x62 iInterface: 0x00 ===>Endpoint Descriptor<=== bLength: 0x07 bDescriptorType: 0x05 bEndpointAddress: 0x81 -> Direction: IN - EndpointID: 1 bmAttributes: 0x02 -> Bulk Transfer Type wMaxPacketSize: 0x0200 = 0x200 max bytes bInterval: 0x00 -> This is a Mass Storage USB Device Interface Class ===>Descriptor Hex Dump<=== bLength: 0x04 bDescriptorType: 0x24 04 24 03 00 ===>Endpoint Descriptor<=== bLength: 0x07 bDescriptorType: 0x05 bEndpointAddress: 0x02 -> Direction: OUT - EndpointID: 2 bmAttributes: 0x02 -> Bulk Transfer Type wMaxPacketSize: 0x0200 = 0x200 max bytes bInterval: 0x00 -> This is a Mass Storage USB Device Interface Class ===>Descriptor Hex Dump<=== bLength: 0x04 bDescriptorType: 0x24 04 24 04 00 ===>Endpoint Descriptor<=== bLength: 0x07 bDescriptorType: 0x05 bEndpointAddress: 0x83 -> Direction: IN - EndpointID: 3 bmAttributes: 0x02 -> Bulk Transfer Type wMaxPacketSize: 0x0200 = 0x200 max bytes bInterval: 0x00 -> This is a Mass Storage USB Device Interface Class ===>Descriptor Hex Dump<=== bLength: 0x04 bDescriptorType: 0x24 04 24 02 00 ===>Endpoint Descriptor<=== bLength: 0x07 bDescriptorType: 0x05 bEndpointAddress: 0x04 -> Direction: OUT - EndpointID: 4 bmAttributes: 0x02 -> Bulk Transfer Type wMaxPacketSize: 0x0200 = 0x200 max bytes bInterval: 0x00 -> This is a Mass Storage USB Device Interface Class ===>Descriptor Hex Dump<=== bLength: 0x04 bDescriptorType: 0x24 04 24 01 00 ===>BOS Descriptor<=== bLength: 0x05 bDescriptorType: 0x0F wTotalLength: 0x002A bNumDeviceCaps: 0x03 ===>USB 2.0 Extension Descriptor<=== bLength: 0x07 bDescriptorType: 0x10 bDevCapabilityType: 0x02 bmAttributes: 0x0000F41E -> Supports Link Power Management protocol ===>SuperSpeed USB Device Capability Descriptor<=== bLength: 0x0A bDescriptorType: 0x10 bDevCapabilityType: 0x03 bmAttributes: 0x00 wSpeedsSupported: 0x0E -> Supports full-speed operation -> Supports high-speed operation -> Supports SuperSpeed operation bFunctionalitySupport: 0x01 -> lowest speed = full-speed bU1DevExitLat: 0x0A -> less than 10 micro-seconds wU2DevExitLat: 0x07FF -> less than 2047 micro-seconds ===>Unknown Capability Descriptor<=== bLength: 0x14 bType: 0x14 bDevCapabilityType: 0x0A 00 01 00 00 00 00 11 00 00 30 40 0A 00 B0 40 0A 00

USBView查看的全部内容如下：   [Port1] : USB Attached SCSI (UAS) 大容量存储设备 Is Port User Connectable: yes Is Port Debug Capable: no Companion Port Number: 17 Companion Hub Symbolic Link Name: USB#ROOT_HUB30#4&3a2d6bb7&0&0#{f18a0e88-c30c-11d0-8815-00a0c906bed8} Protocols Supported: USB 1.1: yes USB 2.0: yes USB 3.0: no Device Power State: PowerDeviceD0 ---===>Device Information<===--- English product name: "Ugreen Storage Device" ConnectionStatus: Current Config Value: 0x01 -> Device Bus Speed: High (is SuperSpeedPlus or higher capable) Device Address: 0x07 Open Pipes: 4 ===>Device Descriptor<=== bLength: 0x12 bDescriptorType: 0x01 bcdUSB: 0x0210 bDeviceClass: 0x00 -> This is an Interface Class Defined Device bDeviceSubClass: 0x00 bDeviceProtocol: 0x00 bMaxPacketSize0: 0x40 = (64) Bytes idVendor: 0x174C = ASMedia Technology Inc. idProduct: 0x1356 bcdDevice: 0x0100 iManufacturer: 0x02 English (United States) " " iProduct: 0x03 English (United States) "Ugreen Storage Device" iSerialNumber: 0x01 English (United States) "5721072100A5" bNumConfigurations: 0x01 ---===>Open Pipes<===--- ===>Endpoint Descriptor<=== bLength: 0x07 bDescriptorType: 0x05 bEndpointAddress: 0x81 -> Direction: IN - EndpointID: 1 bmAttributes: 0x02 -> Bulk Transfer Type wMaxPacketSize: 0x0200 = 0x200 max bytes bInterval: 0x00 ===>Endpoint Descriptor<=== bLength: 0x07 bDescriptorType: 0x05 bEndpointAddress: 0x02 -> Direction: OUT - EndpointID: 2 bmAttributes: 0x02 -> Bulk Transfer Type wMaxPacketSize: 0x0200 = 0x200 max bytes bInterval: 0x00 ===>Endpoint Descriptor<=== bLength: 0x07 bDescriptorType: 0x05 bEndpointAddress: 0x83 -> Direction: IN - EndpointID: 3 bmAttributes: 0x02 -> Bulk Transfer Type wMaxPacketSize: 0x0200 = 0x200 max bytes bInterval: 0x00 ===>Endpoint Descriptor<=== bLength: 0x07 bDescriptorType: 0x05 bEndpointAddress: 0x04 -> Direction: OUT - EndpointID: 4 bmAttributes: 0x02 -> Bulk Transfer Type wMaxPacketSize: 0x0200 = 0x200 max bytes bInterval: 0x00 ---===>Full Configuration Descriptor<===--- ===>Configuration Descriptor<=== bLength: 0x09 bDescriptorType: 0x02 wTotalLength: 0x0055 -> Validated bNumInterfaces: 0x01 bConfigurationValue: 0x01 iConfiguration: 0x00 bmAttributes: 0xC0 -> Self Powered MaxPower: 0x00 = 0 mA ===>Interface Descriptor<=== bLength: 0x09 bDescriptorType: 0x04 bInterfaceNumber: 0x00 bAlternateSetting: 0x00 bNumEndpoints: 0x02 bInterfaceClass: 0x08 -> This is a Mass Storage USB Device Interface Class bInterfaceSubClass: 0x06 bInterfaceProtocol: 0x50 iInterface: 0x00 ===>Endpoint Descriptor<=== bLength: 0x07 bDescriptorType: 0x05 bEndpointAddress: 0x81 -> Direction: IN - EndpointID: 1 bmAttributes: 0x02 -> Bulk Transfer Type wMaxPacketSize: 0x0200 = 0x200 max bytes bInterval: 0x00 ===>Endpoint Descriptor<=== bLength: 0x07 bDescriptorType: 0x05 bEndpointAddress: 0x02 -> Direction: OUT - EndpointID: 2 bmAttributes: 0x02 -> Bulk Transfer Type wMaxPacketSize: 0x0200 = 0x200 max bytes bInterval: 0x00 ===>Interface Descriptor<=== bLength: 0x09 bDescriptorType: 0x04 bInterfaceNumber: 0x00 bAlternateSetting: 0x01 bNumEndpoints: 0x04 bInterfaceClass: 0x08 -> This is a Mass Storage USB Device Interface Class bInterfaceSubClass: 0x06 bInterfaceProtocol: 0x62 iInterface: 0x00 ===>Endpoint Descriptor<=== bLength: 0x07 bDescriptorType: 0x05 bEndpointAddress: 0x81 -> Direction: IN - EndpointID: 1 bmAttributes: 0x02 -> Bulk Transfer Type wMaxPacketSize: 0x0200 = 0x200 max bytes bInterval: 0x00 -> This is a Mass Storage USB Device Interface Class ===>Descriptor Hex Dump<=== bLength: 0x04 bDescriptorType: 0x24 04 24 03 00 ===>Endpoint Descriptor<=== bLength: 0x07 bDescriptorType: 0x05 bEndpointAddress: 0x02 -> Direction: OUT - EndpointID: 2 bmAttributes: 0x02 -> Bulk Transfer Type wMaxPacketSize: 0x0200 = 0x200 max bytes bInterval: 0x00 -> This is a Mass Storage USB Device Interface Class ===>Descriptor Hex Dump<=== bLength: 0x04 bDescriptorType: 0x24 04 24 04 00 ===>Endpoint Descriptor<=== bLength: 0x07 bDescriptorType: 0x05 bEndpointAddress: 0x83 -> Direction: IN - EndpointID: 3 bmAttributes: 0x02 -> Bulk Transfer Type wMaxPacketSize: 0x0200 = 0x200 max bytes bInterval: 0x00 -> This is a Mass Storage USB Device Interface Class ===>Descriptor Hex Dump<=== bLength: 0x04 bDescriptorType: 0x24 04 24 02 00 ===>Endpoint Descriptor<=== bLength: 0x07 bDescriptorType: 0x05 bEndpointAddress: 0x04 -> Direction: OUT - EndpointID: 4 bmAttributes: 0x02 -> Bulk Transfer Type wMaxPacketSize: 0x0200 = 0x200 max bytes bInterval: 0x00 -> This is a Mass Storage USB Device Interface Class ===>Descriptor Hex Dump<=== bLength: 0x04 bDescriptorType: 0x24 04 24 01 00 ===>BOS Descriptor<=== bLength: 0x05 bDescriptorType: 0x0F wTotalLength: 0x002A bNumDeviceCaps: 0x03 ===>USB 2.0 Extension Descriptor<=== bLength: 0x07 bDescriptorType: 0x10 bDevCapabilityType: 0x02 bmAttributes: 0x0000F41E -> Supports Link Power Management protocol ===>SuperSpeed USB Device Capability Descriptor<=== bLength: 0x0A bDescriptorType: 0x10 bDevCapabilityType: 0x03 bmAttributes: 0x00 wSpeedsSupported: 0x0E -> Supports full-speed operation -> Supports high-speed operation -> Supports SuperSpeed operation bFunctionalitySupport: 0x01 -> lowest speed = full-speed bU1DevExitLat: 0x0A -> less than 10 micro-seconds wU2DevExitLat: 0x07FF -> less than 2047 micro-seconds ===>Unknown Capability Descriptor<=== bLength: 0x14 bType: 0x14 bDevCapabilityType: 0x0A 00 01 00 00 00 00 11 00 00 30 40 0A 00 B0 40 0A 00