Dell Upgrade Module (no power adapter) - port expansion upgrade kit
HP PostScript/PDF Upgrade Kit ROM (page description language)
Lenovo Onsite Upgrade - extended service agreement - 5 years - on-site
Lenovo Premier Support Upgrade - extended service agreement - 3 years
Lenovo Depot/Customer Carry-In Upgrade - extended service agreement - 3 years
Lenovo Premier Support Plus Upgrade - extended service agreement - 3 years - on-site