USB 3.0 WriteBlocker

Forensic in-line USB and Flash Media WriteBlocker.

USB WriteBlocker works with USB devices that register as "USB Mass Storage" devices, very common for thumb drives and storage enclosures. USB WriteBlocker is also compatible with other media card types as well, including Compact Flash, Memory Stick, and SD (and SD compatible). Media WriteBlocker is write-blocked by default, but also includes a Read/Write mode for complete access to your media.

  • Remount Button - Connect another device to Media WriteBlocker and press the button - no need to unplug Media WriteBlocker from the computer to switch devices under capture
  • Status LED - Simultaneously reports power to the device and confirms that the write-blocking technology is active.
  • USB Cable Included


Keeping it Simple

Media WriteBlocker has one output (USB 2.0) port and one status LED. It's so simple - there is nothing to configure - and is consquently very easy to use. Simply attach the Device Under Capture and connect Media WriteBlocker to the computer. The LED confirms power to the device and simultaneously confirms that the write-blocking technology is active.


Software Utility

Usually the Operating System has access to information about a volume attached through USB. Because Media WriteBlocker is acting as a filter, the Operating System only sees Media WriteBlocker. Forensic Software Utility will display information about devices connected to Media WriteBlocker, and allow you to save them as text files for inclusion in case reports.



  • Easy, write-blocked access to a variety of flash media: SD Cards, CompactFlash, Memory Sticks, and USB thumb drives
  • Entirely bus-powered -- no need to carry around a separate AC brick
  • Highly portable, with compact lightweight design
  • Optional read/write mode
  • LEDs for indicating power, mode, and access
  • Lifetime toll free tech support and 2-year warranty
  1. Portable: Small but sturdy, Media WriteBlocker travels with you into the field.
  2. Suspect Inputs (write-blocked): USB, Compact Flash, Memory Stick, SD (and SD compatible via adapters)
  3. Write-blocked mode (by default at power-on)
    Read/write mode
  4. USB 2.0