根据官方文档，Archer T4u 支持 USB 3，但当我将其连接到 USB 3 端口时，它被检测为 USB 2 设备（根据 lsusb 输出）。我在运行 Fedora 40 的 Ubuntu PC 和笔记本电脑上都尝试了此操作，它们都具有较新的 USB 3.1 端口。该设备无需安装任何驱动程序即可运行。
设置rtw_switch_usb_mode=1允许/etc/modprobe.d/88x2bu.conf设备以 USB 3 模式连接。
输出lsusb -t：
lsusb -t
/: Bus 001.Port 001: Dev 001, Class=root_hub, Driver=ehci-pci/6p, 480M
/: Bus 002.Port 001: Dev 001, Class=root_hub, Driver=ehci-pci/6p, 480M
|__ Port 001: Dev 002, If 0, Class=Hub, Driver=hub/6p, 480M
|__ Port 002: Dev 003, If 0, Class=Human Interface Device, Driver=usbhid, 12M
|__ Port 002: Dev 003, If 1, Class=Human Interface Device, Driver=usbhid, 12M
|__ Port 004: Dev 004, If 0, Class=Audio, Driver=snd-usb-audio, 12M
|__ Port 004: Dev 004, If 1, Class=Audio, Driver=snd-usb-audio, 12M
|__ Port 004: Dev 004, If 2, Class=Audio, Driver=snd-usb-audio, 12M
|__ Port 004: Dev 004, If 3, Class=Human Interface Device, Driver=usbhid, 12M
|__ Port 005: Dev 005, If 0, Class=Video, Driver=uvcvideo, 480M
|__ Port 005: Dev 005, If 1, Class=Video, Driver=uvcvideo, 480M
|__ Port 005: Dev 005, If 2, Class=Vendor Specific Class, Driver=[none], 480M
|__ Port 006: Dev 006, If 0, Class=Human Interface Device, Driver=usbhid, 12M
/: Bus 003.Port 001: Dev 001, Class=root_hub, Driver=uhci_hcd/2p, 12M
/: Bus 004.Port 001: Dev 001, Class=root_hub, Driver=uhci_hcd/2p, 12M
/: Bus 005.Port 001: Dev 001, Class=root_hub, Driver=uhci_hcd/2p, 12M
|__ Port 001: Dev 002, If 0, Class=Hub, Driver=hub/3p, 12M
|__ Port 001: Dev 003, If 0, Class=Vendor Specific Class, Driver=btusb, 12M
|__ Port 001: Dev 003, If 1, Class=Wireless, Driver=btusb, 12M
|__ Port 001: Dev 003, If 2, Class=Vendor Specific Class, Driver=btusb, 12M
|__ Port 001: Dev 003, If 3, Class=Application Specific Interface, Driver=[none], 12M
/: Bus 006.Port 001: Dev 001, Class=root_hub, Driver=uhci_hcd/2p, 12M
/: Bus 007.Port 001: Dev 001, Class=root_hub, Driver=uhci_hcd/2p, 12M
/: Bus 008.Port 001: Dev 001, Class=root_hub, Driver=uhci_hcd/2p, 12M
/: Bus 009.Port 001: Dev 001, Class=root_hub, Driver=xhci_hcd/2p, 480M
|__ Port 002: Dev 002, If 0, Class=Hub, Driver=hub/4p, 480M
/: Bus 010.Port 001: Dev 001, Class=root_hub, Driver=xhci_hcd/2p, 10000M
|__ Port 002: Dev 002, If 0, Class=Hub, Driver=hub/4p, 5000M
|__ Port 001: Dev 004, If 0, Class=Vendor Specific Class, Driver=rtl88x2bu, 5000M
以下是该设备的 lsusb 的详细输出：
sudo lsusb -D /dev/bus/usb/010/004
Device: ID 2357:0115 TP-Link Archer T4U ver.3
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 3.00
bDeviceClass 0 [unknown]
bDeviceSubClass 0 [unknown]
bDeviceProtocol 0
bMaxPacketSize0 9
idVendor 0x2357 TP-Link
idProduct 0x0115 Archer T4U ver.3
bcdDevice 3.00
iManufacturer 1 Realtek
iProduct 2 802.11ac NIC
iSerial 3 123456
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 0x0053
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x80
(Bus Powered)
MaxPower 504mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 5
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 255 Vendor Specific Subclass
bInterfaceProtocol 255 Vendor Specific Protocol
iInterface 2 802.11ac NIC
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x84 EP 4 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0400 1x 1024 bytes
bInterval 0
bMaxBurst 3
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x05 EP 5 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0400 1x 1024 bytes
bInterval 0
bMaxBurst 3
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x06 EP 6 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0400 1x 1024 bytes
bInterval 0
bMaxBurst 3
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x87 EP 7 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 3
bMaxBurst 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x08 EP 8 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0400 1x 1024 bytes
bInterval 0
bMaxBurst 3
Binary Object Store Descriptor:
bLength 5
bDescriptorType 15
wTotalLength 0x0016
bNumDeviceCaps 2
USB 2.0 Extension Device Capability:
bLength 7
bDescriptorType 16
bDevCapabilityType 2
bmAttributes 0x00000002
HIRD Link Power Management (LPM) Supported
SuperSpeed USB Device Capability:
bLength 10
bDescriptorType 16
bDevCapabilityType 3
bmAttributes 0x00
wSpeedsSupported 0x000e
Device can operate at Full Speed (12Mbps)
Device can operate at High Speed (480Mbps)
Device can operate at SuperSpeed (5Gbps)
bFunctionalitySupport 1
Lowest fully-functional device speed is Full Speed (12Mbps)
bU1DevExitLat 10 micro seconds
bU2DevExitLat 287 micro seconds
Device Status: 0x0000
(Bus Powered)
通过安装以下驱动程序进行修复：https://github.com/morrownr/88x2bu-20210702
在安装过程中，脚本允许编辑驱动程序选项。
设置
rtw_switch_usb_mode=1允许/etc/modprobe.d/88x2bu.conf设备以 USB 3 模式连接。输出
lsusb -t：以下是该设备的 lsusb 的详细输出：