• Pen drive virus-removal tools help detect and remove viruses, worms and malware.usb flash drive image by Bosko Martinovic from Fotolia.com
  
  A pen drive is storage device that connects to the USB port drive on a computer, peripherals or mobile devices. Users simply need to drag and drop files onto the pen drive, and it will create a backup of the files. Yet, sometimes these devices get infected with viruses. Free tools are available that will clean and remove any viruses or malware.
  
  

Autorun Virus Removal Tool

• One problem with viruses being on removable storage devices like the pen drive is that it allows the virus to spread to other devices, including computers. Further, since these viruses often have the same extensions as standard programs, it's hard for a user to distinguish the virus from a standard program. The Autorun Virus Removal Tool will scan through the files contained on the removable storage device and find any viruses. It will then remove those viruses and fix any issues that the virus created. Viruses will only remove Autorun (actions taken to make a system ready for an operating system) viruses, and it will only start removing viruses when the user manually runs the program.
  
  

Smart Virus Removal

• This free tool allows users to remove viruses, Trojans and worms from their pen drives. Users have to manually run the tool, and they will have to choose from four main options. They can restore the factory settings for Windows, or they can actually remove the virus USB drive device. They can choose to remove the file from a single folder, or they can remove all Autorun.inf files. Autorun.inf viruses are especially insidious since they cause the pen drive not to open. The program will override the virus and remove it. Users will then be able to open up their files.
  
  

ClamWin Portable

• ClamWin Portable targets viruses and spyware (provides pieces of information to third-party companies) on portable USB flash drives, portable hard drives, iPods or CDs. Users can set up the system to scan for viruses at scheduled intervals, and it will automatically download any updates to the software. Users can run this program as a standalone program. Or, they can integrate it into Microsoft Windows Explorer or Outlook, allowing it to scan for infected attachments in e-mails. The system uses a wizard to set up scans. This is an open source tool, which means that users can receive help from a community of users and developers.