The ThinkPad X210Ai is a modified laptop that combines the chassis of older ThinkPad models (X200/X201) with a modern mainboard from TP Art, featuring Intel Core Ultra processors, DDR5 RAM support, dual M.2 SSD slots, Thunderbolt 4, and HDMI 2.1. The modification allows users to retain the original display and keyboard while requiring some chassis adjustments. TP Art offers a kit starting at 9, with complete builds beginning at 9, excluding RAM and storage. The popularity of the X210Ai has surged due to rising RAM prices and the demand for reliable, customizable machines. The modified board allows compatibility with Windows 11 and various Linux distributions. Processing times for orders can take up to six months, and cancellations are not allowed once placed.