Door - For memory expansion slot on front of OmniBook - User replaceable
HP OmniBook 300 Notebook PC
HP OmniBook 425 Notebook PC
HP OmniBook 430 Notebook PC
HP OmniBook 530 Notebook PC
HP OmniBook 600C Notebook PC
HP OmniBook 600CT Notebook PC
HP OmniBook 300 Notebook PC
HP OmniBook 425 Notebook PC
HP OmniBook 430 Notebook PC
HP OmniBook 530 Notebook PC
HP OmniBook 600C Notebook PC
HP OmniBook 600CT Notebook PC