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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