Blue & White Revision 1 logic boards only support one internal IDE hard drive. However, this limitation can be easily conquered by adding a PCI ATA card.

Here's how you can tell if you have what logic board you currently have in your Blue & White G3: Check the number printed on the CMD chip at location U1. The CMD chip on Rev. 1 logic boards is PCI646U2 and on Rev. 2 logic boards is 646U2-402. To find the location of the CMD chip on the logic board, click on the graphic on the item page. It is clearly identified there.