HP 516297-001 - Base enclosure (bottom chassis) assembly - For defeatured (DF) 35W models - Includes rubber feet Retail
HP 516298-001 - Base enclosure (bottom chassis) assembly - For defeatured (DF) 45W models - Includes rubber feet Retail
HP 378240-001 - CPU base enclosure (chassis bottom) - Does not include the speaker assembly - For use with defeatured (DF) models Retail