pl2571.dll is a PL2571 Dynamic Link Library
belonging to PL2571 Dynamic Link Library
from Prolific Technology Inc.
Non-system processes like pl2571.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.