输出：
lsusb
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 0bda:9210 Realtek Semiconductor Corp. RTL9210 M.2 NVME Adapter
Bus 001 Device 002: ID 1532:0a24 Razer USA, Ltd Razer BlackWidow V3 Tenkeyless
Bus 001 Device 007: ID 0b05:1939 ASUSTek Computer, Inc. AURA LED Controller
Bus 001 Device 006: ID 05e3:0610 Genesys Logic, Inc. Hub
Bus 001 Device 005: ID 046d:c539 Logitech, Inc. Lightspeed Receiver
Bus 001 Device 004: ID 1038:1430 SteelSeries ApS SteelSeries Stratus Duo
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
lsusb -v
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Couldn't open device, some information will be missing
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 3.10
bDeviceClass 9 Hub
bDeviceSubClass 0
bDeviceProtocol 3
bMaxPacketSize0 9
idVendor 0x1d6b Linux Foundation
idProduct 0x0003 3.0 root hub
bcdDevice 6.05
iManufacturer 3 Linux 6.5.0-26-generic xhci-hcd
iProduct 2 xHCI Host Controller
iSerial 1 0000:00:14.0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 0x001f
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xe0
Self Powered
Remote Wakeup
MaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 9 Hub
bInterfaceSubClass 0
bInterfaceProtocol 0 Full speed (or root) hub
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0004 1x 4 bytes
bInterval 12
bMaxBurst 0
Bus 001 Device 003: ID 0bda:9210 Realtek Semiconductor Corp. RTL9210 M.2 NVME Adapter
Couldn't open device, some information will be missing
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.10
我是否理解正确，我的外部 NVME SSD 使用 USB 2 而不是 3？为什么会这样？这是我安装 Linux 的 SSD