Thanks for the replies. I thought this was the case but wanted to be sure before I did anything that was irreversible.

Hi everyone, my first post on the forums. I've been working on building a 486 computer and have been getting a lot of information from these forums but I've hit a wall and need some advice. I recently purchased a 486dx4 overdrive cpu. This is the one I got: http://www.ebay.com/itm/141024869118? …