An exclusive review of three popular forensic write blockers by David Kovar of NetCerto, Inc. is now available here. Included in the review are the Guidance FastBloc2 FE, the WiebeTech Forensic UltraDock V4 and the Tableau T35es.
Please use this thread for any questions or comments.
My only bad experience with the Tableaus is that the USB 2.0 interface is only physically supported by the soldered connectors to the system board. I had to use the device in a cold setting and the thing snapped right off and is floating inside the case. Luckily I had a couple of others, but for the price I'd expect a little more robustness.
That was less than six months after I bought the unit and it should have been under warranty by the distributor, ForensicPC.com but they never responded to my request for an RMA number.