Media WriteBlocker

Forensic in-line USB and flash media write-blocker

  • Easy flash drive write blocking
  • Reliable evidence protection
  • Multiple media connection types

Media WriteBlocker

Digital and forensics investigators, corporate IT staff, technicians, and lawyers who want to view and evaluate a flash drive or memory card, without tampering with the evidence, rely upon the WiebeTech® Media WriteBlocker.

Need to view a flash drive for evidence? Just connect it to the WiebeTech Media WriteBlocker. You’ll be able to view the drive and its contents without making any changes to it. The evidence will be preserved.

The WeibeTech Media WriteBlocker connects to a variety of flash media: SD Cards, CompactFlash, Memory Sticks, and USB thumb drives.

Additional features

  • Compact and lightweight design
  • Optional read/write mode
  • Free US-based customer support
  • 2-year limited warranty

Whether you’re an IT manager, forensic investigator, or lawyer, the CRU WiebeTech Media WriteBlocker is a necessary part of your investigation toolkit.


Product name Media WriteBlocker
Host (I/O) Ports (1) USB 2.0: up to 480 Mbps
Drive Types Supported
  • Compact Flash
  • SD Card
  • Memory Stick
  • USB Thumb Drives
  • USB drives via USB cable (if the device class is USB Mass Storage Device and it does not use proprietary firmware)
Maximum HDD size 2000 GB (1000 GB in a Terabyte)
Number of LEDs 1
Description of LEDs single bi-color LED indicates power, drive access, and write-block/read-write mode
Operating system compatibility Windows XP or later
Windows Server 2003 or later
Mac OS X
Most modern Linux distributions
Construction material(s) ABS
Bus power Yes
Dimensions 4.92″ x 3.94″ x 1.26″ (125mm x 100mm x 32mm)
Weight 0.10 lbs. (0.05 kg)
Write Blocking Yes
Write Protection write-blocked, with optional read-write mode
Compliancy FCC, CE, RoHS, RCM
Warranty CRU provides a 2-year limited warranty for this product.