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USBポートの電源を制御．一部のUSB portでのみ利用できる． USB連動AC電源タップを使うとAC機器の電源も連動できる．

chipは対応していても回路がなくて使えないことが多いよう．PCのportが非対応でも対応USB HUBを接続することで利用できるようになる．

以下は利用できる例．

$ sudo lsusb -v 2>&1 | grep wHubCharacteristic\ 0x0089 -A4
  wHubCharacteristic 0x0089
    Per-port power switching
    Per-port overcurrent protection
    TT think time 8 FS bits
    Port indicators
--
  wHubCharacteristic 0x0089
    Per-port power switching
    Per-port overcurrent protection
    TT think time 8 FS bits
    Port indicators

• AC Power Control by USB Hub

• mvp/uhubctl: uhubctl \- USB hub per\-port power control

Original idea for this code was inspired by hub-ctrl.c by Niibe Yutaka: https://www.gniibe.org/development/ac-power-control-by-USB-hub

• darrylb123/usbrelay: Control usb relay \- based on hidapi

• Silver Shield Programmable Power Outlet Strip \(built in transformer\) \(SIS\-PMS\)

Linux版のtool

• SIS\-PM Control for Linux