|_ Port 4: Dev 5, If 0, Class=Mass Storage, Driver=, 5000M On USB storage device problems, pay attention to the “Driver” output of lsusb -t. In this example, device 3 (“Driver=uas”) is UASP-capable, while device 5 (“Driver=usb-storage”) is not. |_ Port 4: Dev 5, If 0, Class=Mass Storage, Driver=usb-storage, 5000M |_ Port 2: Dev 3, If 0, Class=Mass Storage, Driver=uas, 5000M The command lsusb -t reveals, if your personal combination of device, OpenWrt firmware and external USB drive supports the newer and slightly faster USB 3.0 UASP Extension (USB Attached SCSI Protocol) or the older USB 3.0 block driver:

ASM2115 SATA 6Gb/s bridgeīus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Since this device is listed with the same bus-ID as the 3.0 hub, the USB-harddisk obviously is connected via the USB 3.0 protocol:īus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hubīus 002 Device 002: ID 174c:1153 ASMedia Technology Inc. Lsusb has recognized USB 2.0 and 3.0 support on this port and a connected device consisting of an USB-to-SATA-disk-bridge from ASMedia. The following example was run on a router with a single USB port.

This package installs the lsusb command that will output information of the router-built in USB-hub and connected USB-devices. If your log output does not show USB-related output like this, please check that you have the right drivers and report this as a bug in the bugtracker Diagnostics using lsusbįurther diagnostics information about connected USB drives can be obtained, when installing the optional 'usbutils' package: sd 4:0:0:0: Assuming drive cache: write through scsi 4:0:0:0: Direct-Access JetFlash Transcend 8GB 1100 PQ: 0 ANSI: 4 usb-storage 1-1:1.0: USB Mass Storage device detected usb 1-1: new high-speed USB device number 2 using ehci-pci Here is an example of the dmesg text about an USB device being connected and properly recognized. If USB drivers are active and your device has successfully been recognized, you will notice that additional log output has been added at the end. Now connect your external storage device, wait a few seconds and then execute dmesg on the terminal again.ģ.

These are “driver messages”, events related to hardware being connected/started or disconnected/shut-down.Ģ. Execute dmesg in the terminal, note its output. To check, if USB support in included and if connected USB devices get detected:ġ. Most firmware images already have USB or SATA support integrated in the default profile/image, so it should not be necessary to install additional packages.

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