Ghost device won't disappear

I've been having this issue with a ghost device that won't seem to be completely removed no matter how many times I uninstall it in the device manager. The device in the device manager shows up as SM Bus Controller in other devices. Whenever I start up windows, the add new hardware wizard window comes up and I have to hit cancel. This is because I have an external IDE/SATA connector that has a power plug and a USB cable. I can connect to SATA and IDE hard drives that are normally installed in the computer. When I first tried this connector out, I didn't realize I need to plug everything in before I turn on the computer. I had plugged it in with a hard drive after the computer was already on and in windows. I have tried to show all hidden devices and tried to remove, still would not remove. I went in to environment variables and inserted a script "devmgr_show_nonpresent_devices" and added the value of 1 to show all non present devices. I even tried removing the ghost device through an application called Ghostbuster which did not work either. Any thoughts on how to remove this ghost device?

I've seen this before and the only success I've ever had was to disable it. Then you no longer get the add new hardware wizard.