What hard drive did the Dell Dimension 9200 originally come with?

This model would have most likely came with a 3.5" SATA hard drive.

This is very simple.  When you put in your Service Tag Number and search, it will bring up the Computer System Information.    You screen will display Your system at a glance.  Look on the right side of the screen and locate the    Quick Links.  Then select View Product Specs.

The Information will show you the Current Configuration and what you looking for is the Original Configuration as it came from the Dell factory. 

I have a Dimension 9200  341-3275 : DataSafe 250GB (Secured Storage and Data Recovery Solution) 

This system only offered 3.5 drives.

Former Dell L2 Technician for this product line.