What does the rtl stand for in the wd hard drive model name?

[BlueLAser]

I am looking at the western digital 500 blue hard drive like on newegg, and i notice that there was two model names for the same drive. however i did not know what they represent exactly. my guess was that the wd5000bevtrtl meant retail and the the wd5000bevt was for system builders or bulk buyers. so is it that the only difference is that one comes in the package and the other does not. right. cause i saw one at besy buy and one is more expensive. now does this mean that the retail one is less likely to fail or do i run the same risk. i know this is a stupid question that may seem a little stupid but i just want to make sure. thanks

 

[Bill Gates]

That is correct. You also might try using the key with the word "shift" written on it every now and then.