applian miniport 4?

I installed the upgrade to Replay Media Catcher 4 (4.0.19) yesterday. When I rebooted I saw a message that Windows had found new hardware (Applian miniport 4). Windows said it didn't have the software necessary to complete the installation of this hardware, so I let it go searching for it. It apparently found what it needed and said the hardware was successfully installed. Afterwards it occurred to me that since there was no new hardware, I might have allowed some sort of virus to be installed on my system. Is that the case, or is there actually an Applian miniport 4 that needed installation with software that was not provided?