UsbHandler

UsbHandler is a small software application whose sole purpose is to help you enable or disable the USB ports with minimal effort.
It comes in handy especially when you want to make sure other users cannot transfer data from/to your computer. You can also make use of this program’s blocking abilities for disabling the AutoRun function, which allows viruses to easily infiltrate into your computer via USB flash drives.

The advantages of being portable

Since this is a portable program, it is important to mention that it doesn’t leave any traces in the Windows Registry.
You can copy it on any USB flash drive or other devices, and take it with you whenever you to need to block USB ports on the breeze, without having to go through installation steps.

Simple looks and easy-to-trigger actions

UsbHandler sports a clean and plain interface that embeds only a few dedicated parameters to tinker with. The tool was designed with an overall simplicity in mind, so even less experienced users can learn to master the entire process in no time.
Basically, it proves to be a piece of cake to work with this application, as it embeds only two buttons for helping you trigger the process: “Enable USB” and “Disable USB.”
When you enable the blocking mode, the AutoRun function is disabled, so your computer is not able to automatically detect that your USB is plugged in. You cannot view the USB flash drive’s corresponding letter in your Windows Explorer.

Bottom line

All things considered, UsbHandler offers a simple yet efficient software solution when it comes to helping you enable or disable the USB ports with just one click. On the downside, it doesn't offer support for a master password, so unauthorized users can easily tweak the program's settings.