That’s why [Jim Heaney] created the I2C-USB-Hub. The device takes your standard USB 2.0 hub circuit, and adds in a MT9700 P-MOSFET load switch for each port.

Control is via an Arduino Nano, with a few push buttons and a 16 x 2 LCD display for user feedback. Often, completing a first build will reveal all manner of limitations and drawbacks of a design.