Plug in device to control Desk fan speed?

[JDRoberts]

See the following existing discussion ( The topic title is a clickable link)

Desk Fans and Smart Plugs

I have a desk fan that has three speed settings. It is not a Ceiling Fan so a fan control switch is not an option here. I tried placing it on a wemo mini switch but the toggle of on and off did not work with the fan. Does someone know of a work around?