NEC PC-9821Ne2. The seller states the unit is non-functional (不動品). The item includes an HDD that was previously used for managing data with 'Kiri' and 'Matsu' software. The seller notes that after being opened for the first time in 10 years, the screen exhibited 'vinegar syndrome' symptoms and the unit failed to power on/operate. The listing includes the items shown in the first photo, specifically the computer and the internal HDD.