【Ultra Rare Vintage Museum-Grade PC】 The IBM 5140 Personal Computer Convertible is a vintage laptop manufactured in the United States. The IBM 5140 PC is a piece of retro technology that appeals to collectors and vintage computing enthusiasts. It has historical significance as a classic piece of hardware from the early stages of personal computing. ※ Main unit (256kb RAM) + Expansion module + IBM original power cable 3-piece set ※ It boots up, but the display screen condition is poor and does not display clearly (photo 10) ※ Both notches on the screen lid are broken (photo 9) ■ It seems that this item was received from someone who was an assignee when a certain manufacturer's Asia regional headquarters was in Japan, and who was given the item when they returned to their home country.