Skip to main content
Version: current

USB Features

Summary​

Sub-menu: /system/routerboard/usb
Package: system (v6, v7)

This article describes RouterBoard device-supported USB features.

USB Power Reset​

USB power reset turns off USB port power for a specified time. It is useful when a 3G/LTE modem needs to be restarted but there is no physical access to it.

Available properties​

  • duration (time; Default: "3s") - Time interval during which power is turned off.

For example, turn off USB port power for 10 seconds:

/system/routerboard/usb/power-reset duration=10s

RouterBoards with multiple USB buses also require a bus to be specified in order to do a USB power reset.

Available properties​

  • duration (time; Default: "3s") - Time interval of how long power is turned off.
  • bus (integer; Default: 1) - USB bus where power reset is applied.
warning

RB953GS: The miniPCIe slot closer to Ethernet ports on the RB953GS board is the one which is shared with USB port and has configurable USB port type, its USB bus number is 1. Depending on USB port type the power reset is done on USB port or miniPCIe slot. The other miniPCIe slot closer to SFP slots has independent bus - 2.

warning

RB922UAG: The USB port has an independent bus - 1. The miniPCIe slot has an independent bus - 2.

warning

CCR1072-1G-8S+: The micro USB port has an independent bus - 0. The USB Type-A port has an independent bus - 1.

USB Port Type​

Boards with switchable USB port routing have shared USB lines which can be routed to an external USB-Type port or a mini-PCIe slot. For more reference see the board block diagram in the document section on the board specification page.

[admin@MikroTik] > /system/routerboard/usb/set type=
USB-type-A     auto     mini-PCIe
auto(default)During RouterOS startup check if a USB device is present in mini-PCIe slot:
  • if present - use device in mini-PCIe slot
  • if not present - defaults to the external USB Type A port
USB-type-AUse USB devices connected to USB Type A connector
mini-PCIeRoute USB lines to corresponding mini-PCIe slot
warning

RB953GS: The miniPCIe slot closer to Ethernet ports on the RB953GS board is the one which is shared with the USB port and has a configurable USB port type, its USB bus number is 1. Depending on the USB port type the power reset is done on the USB port or the miniPCIe slot. The other miniPCIe slot closer to SFP slots has an independent bus - 2.

USB Port Mode​

RB2011 series, CRS1xx series, and mAP have a micro USB port which operates in host mode when a USB device is attached through a USB OTG cable. Some vendor cables require forced host mode to recognize the connected device.

Available Properties​

  • usb-mode (automatic | force-host; Default: "automatic") - Defines USB port mode.
warning

Warning

On RB2011 and CRS1xx series boards USB devices may not work the first time they are plugged in. In such cases a power cycle (not reboot) is required.

RouterBoard USB Port Limitations​

Some RouterBoard devices have notable USB port limitations.

* RB mAP 2n - does not support USB Power Reset
* RB750UP - does not support USB Power Reset
* RB751U-2HnD - does not support USB Power Reset
* RB751G-2HnD - does not support USB Power Reset
* RB411U - does not support USB Power Reset
* RB411UAHR - does not support USB Power Reset and USB Powering (USB power injector is required)
* RB433UAH - does not support USB Power Reset
* RB435G - does not support USB Power Reset
* RB493G - does not support USB Power Reset and USB Powering (USB power injector is required)

warning

RouterOS does not support memory slots from USB modems.