computer boards

Originally Posted by brandon

Hard drive boards are the width of a hard drive and cd/dvd boards are the width of a cd/dvd drive.

Well, there's that too...

In case the above observations doesn't get the job done and we are talking about IDE. The pins are arranged differently. Hard drives have the smaller segment of gold pins between the larger segment and the silver colored pins. CD/DVD have the silver pins on one side of the large segment and the small segment of gold pins on the opposite side.

great answer...thanks for sharing your knowledge with us...thats what i was looking for