Unlike most extensions, PCB is used by at least three different types of software. It could be a file with custom settings from PowerPoint, designs for a printed circuit board, or business card designs. C:\Users\AppData\Roaming\Microsoft\PowerPoint, with replaced with whatever username you have in Windows. In theory, you could copy a PCB file created by another user into this folder so that you can run PowerPoint with their custom settings. In practice, this may not always work, particularly if you are running different editions of PowerPoint. Writer Bio
