Summary: Worked in my Dell E6410 that wouldn't boot. After diagnostic I got some error code that drive has error Code 2000-0142. This drive fit like the glove. Very easy to replace, I think it's only two screws and reloading windows 7 pr 32bit took less than half hour. So far so good.
Summary: The computer I bought this for had an Apple hard drive. I'm no expert on computers, but it seems to me there would be compatibility issues after a short period of time. And there were! That 250 GB HDD crashed before I had it for one full year.