在我的 ubuntu 16.04 上，我有一个 usb3 磁盘底座，enermax EB311SC，但它仅被识别为 usb2.1 托架。它有外部电源，所以我想 usb3 电源要求应该不重要。因此速度被限制在 50Mo/s，即使在 ubuntu 的磁盘性能实用程序中也是如此。我的电脑上的 usb3 正在运行，插入同一端口的外部驱动器在 usb3.0 中以正确的速度运行。
以下是一些命令行输出。如果有人需要更多，请直接询问！
~$ lsusb -t：
/: Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 5000M
/: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 480M
|__ Port 1: Dev 12, If 0, Class=Mass Storage, Driver=uas, 480M
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/3p, 480M
|__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/8p, 480M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/3p, 480M
|__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/6p, 480M
|__ Port 2: Dev 8, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M
|__ Port 4: Dev 3, If 0, Class=Vendor Specific Class, Driver=btusb, 12M
|__ Port 4: Dev 3, If 1, Class=Vendor Specific Class, Driver=btusb, 12M
|__ Port 4: Dev 3, If 2, Class=Vendor Specific Class, Driver=btusb, 12M
|__ Port 4: Dev 3, If 3, Class=Application Specific Interface, Driver=, 12M
~$ lsusb -D /dev/bus/usb/003/012 | grep bcdUSB：
Couldn't open device, some information will be missing
bcdUSB 2.10
~$ dmseg
[ 1908.593789] usb 3-1: new high-speed USB device number 3 using xhci_hcd
[ 1908.795561] usb 3-1: New USB device found, idVendor=152d, idProduct=2561
[ 1908.795569] usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=5
[ 1908.795574] usb 3-1: Product: USB to SATA bridge
[ 1908.795578] usb 3-1: Manufacturer: OImaster
[ 1908.795581] usb 3-1: SerialNumber: 201501300013
[ 1908.797458] scsi host7: uas
[ 1908.801585] scsi 7:0:0:0: Direct-Access JMicron 9122 PQ: 0 ANSI: 6
[ 1908.803521] sd 7:0:0:0: Attached scsi generic sg0 type 0
[ 1908.803810] sd 7:0:0:0: [sda] 15628053168 512-byte logical blocks: (8.00 TB/7.28 TiB)
[ 1908.805338] sd 7:0:0:0: [sda] Write Protect is off
[ 1908.805344] sd 7:0:0:0: [sda] Mode Sense: 67 00 10 08
[ 1908.805998] sd 7:0:0:0: [sda] Write cache: enabled, read cache: enabled, supports DPO and FUA
[ 1908.869565] sda: sda1
[ 1908.873381] sd 7:0:0:0: [sda] Attached SCSI disk
[ 1910.032271] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null)
内核更新没有帮助（Linux 4.15.0-42-generic）
有什么帮助吗？