As you know, almost viruses, trojans, worms is spreaded from USB storage devices. This is including USB Flash drive, removable hard disk, Memory card, SD, MicroSD, MMC, USB Camera, USB Audio player, Mobile phone, iPod, Iphone etc.
Other antivirus software should update signature database regularly, and they can not effectively protect offline computer that is not connected to the Internet. When new viruses, worms and other malicious attacks strike, traditional signatures are insufficient.
Beside the common antivirus, there is another antivirus that is designed for USB Flash drive and other media based on USB. And its easy to use and small memory usage.
Naevius USB Antivirus gives you full freedom for securely using your removable usb drives!

• USB Security Protection 8.1.0.0
  USB Security Protection is the world's best USB disk security and USB antivirus software, which provides 100% protection against any malicious programs and virus trying to attack...

• USB Drive AntiVirus 3.0
  USB Drive Antivirus provides 100% antivirus protection against any viruses trying to attack via removable media

• EMCO Malware Destroyer 6.0
  Malware Cleaner is a free antivirus solution aimed to protect you from viruses, worms, trojans, adware and other type of malware. This tool can effectively find and destroy viruses on your computer and can be used separately or as addition to your...

• Naevius USB Antivirus 2.1
  Recently there are many case reported that autorun virus spread through so many computer due to using flash memory or pendrive, so we need a preventive action to stop this virus spread to our computer! Naevius USB Antivirus (version 2

• USB Virus Scan 2.31
  USB Virus Scan provides 100% antivirus protection against any usb viruses trying to attack via removable media.When an USB device is inserted into your computer, it will automatically scan it, block and remove usb virus and trojan,also it can remove autorun virus causing that you can not open a drive by double clicking. Compare with other...

• Principal AntiVirus 1.1
  Principal AntiVirus is powerful antivirus software which protects your Windows computer against a large range of threats including viruses, spyware, worms, trojans, backdoors, adware and other malware

• Principal AntiVirus 1.11
  Principal AntiVirus is powerful antivirus software which protects your Windows computer against a large range of threats including viruses, spyware, worms, trojans, backdoors, adware and other malware. It is designed to offer you principal ...

• AntiVirus for MDaemon 2.2.9
  AntiVirus for MDaemon is a virus scanner designed to detect malicious content embedded or attached to email messages

• Rising Antivirus 2011 23.00
  RISING Antivirus defense your computer away from all types of viruses, trojan, worm, and other malicous viruses threats in real time. Zero-Day Computer Security Protection with...