riomscps.dll is a RioMSCPS
belonging to Rio Mass Storage Class Device Manager Proxy Stubb
from Digital Networks North America, Inc.
Non-system processes like riomscps.dll originate from software you installed on your system. Since most applications store data in your system's registry, it is likely that your registry has suffered fragmentation and accumulated invalid entries which can affect your PC's performance. It is recommended that you check your registry to identify slowdown issues.