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uhubctl
=======
uhubctl is utility to control USB power per-port on smart USB hubs.
Smart hub is defined as one that implements per-port power switching.
Original idea for this code was inspired by hub-ctrl.c by Niibe Yutaka:
http://www.gniibe.org/development/ac-power-control-by-USB-hub
Compatible USB hubs
===================
Note that very few hubs actually support per-port power switching.
Some of them are no longer manufactured and can be hard to find.
This is list of known compatible USB hubs:
| Manufacturer | Product | VID | PID |
|:------------------- |:--------------------------------------------------------- | ----:| ----:|
| AmazonBasics | HU3770V1, 7 Port USB 3.0 Hub with 12V/3A Power Adapter |`2109`|`2811`|
| Anker | AK-A7518111 | | |
| Apple | Thunderbolt Display 27" (internal USB hub) | | |
| Apple | USB Keyboard With Numeric Pad (internal USB hub) | | |
| Asus | Z87-PLUS Motherboard (onboard USB hubs) | | |
| B&B Electronics | UHR204 | | |
| Belkin | F5U701-BLK | | |
| Circuitco | Beagleboard-xM (internal USB hub) |`0424`|`9514`|
| D-Link | DUB-H7 (Silver edition only!) |`2001`|`F103`|
| Elecom | U2H-G4S | | |
| Hawking Technology | UH214 | | |
| Lenovo | ThinkPad EU Ultra Dockingstation (40A20090EU) |`17EF`|`100F`|
| Linksys | USB2HUB4 | | |
| Plugable | USB2-HUB10S | | |
| Rosewill | RHUB-210 |`0409`|`005A`|
| Sanwa Supply | USB-HUB14GPH | | |
| Targus | PAUH212 | | |
This table is by no means complete.
If your hub works with uhubctl, but is not listed above, please report it
by opening new issue at https://github.com/mvp/uhubctl/issues,
so we can add it to supported table.
Some modern motherboards have built-in root hubs that do support
this feature, but you need to use option `-i` to enable it.
Compiling
=========
This utility was tested to compile and work on Linux
(Ubuntu, Redhat/Fedora/CentOS), FreeBSD and Mac OS X.
It should be possible to compile it for Windows as well -
please report if you succeed in doing that.
First, you need to install library libusb-1.0 (version 1.0.12 or later):
* Ubuntu: `sudo apt-get install libusb-1.0-0-dev`
* Redhat: `sudo yum install libusb1-devel`
* MacOSX: `brew install libusb`, or `sudo port install libusb-devel`
* FreeBSD: libusb is included by default
* Windows: TBD?
To compile, simply run `make` - this will generate `uhubctl` binary.
Usage
=====
You can control the power on a USB port(s) like this:
uhubctl -a off -p 235
This means operate on default smart hub and turn power off (`-a off`, or `-a 0`)
on ports 2,3,5 (`-p 235`). Supported actions are `off`/`on`/`cycle` (or `0`/`1`/`2`).
`cycle` means turn power off, wait some delay (configurable with `-d`) and turn it back on.
On Linux, you may need to run it with `sudo`, or to configure `udev` USB permissions.
If you have more than one smart USB hub connected, you should choose
specific hub to control using `-l` (location) parameter.
Copyright
=========
Copyright (C) 2009-2017 Vadim Mikhailov
This file can be distributed under the terms and conditions of the
GNU General Public License version 2.
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