File Extension PDR File Format Windows Port Driver PDR stands for Windows Port Driver. This was last updated in March 2012 By Margaret Rouse Browse File Extensions Alphabetically: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # Ask a Question. Find an Answer. Ask your peers a question about this file extension. Ask a Question G50-80, "a cd/dvd driver is missing" How do I use the serial port in Sun virtual box with Windows XP How to check whether a port of a system from AS400?