This means that the product has been opened, possibly used but is in perfect working condition with no signs of cosmetic or functional defect. Product may includes warranty, and accessories found with the original product. Product may or may not be in the original packaging. Returned items with minor packaging defects fall under this category.
The item is used, in like-new condition. No original packaging. Only the motherboard and IO shield are included in the package. No other accessories?installation manual and CD, etc.