Add-in vs. on-board RAID (Score 1)

There might be open source drivers for the add-in card you got on the 2450. The shoddy closed-source driver is for the on-board Adaptec raid card. Since the AMI is a great deal more expensive than the proprietary on-board controller, which do you think a customer will opt for? So Dell basically says "If you want an open source driver, you need to pay an extra thousand bucks." (And that's making the huge assumption that you are talking to a salesperson who knows how to do more than just take credit card numbers.)