ThinkPad UltraBay and earlier hot-swap functionality was essentially rendered difficult if not impossible. ThinkPad UltraBay UltraBay is originally IBM's name for the swappable drive bay in the ThinkPad range of laptop computers. When the Thinkpad product line was sold to Lenovo, the concept and the name stayed. Furthermore, it is used in some of Lenovo's own IdeaPad Y Series laptops. Introduced with the ThinkPad 750 series in 1995, this technology has gone through redesigns with almost every new generation of ThinkPad, which may lead to confusion. The following table gives an overview of the different UltraBay types, in which models they occurred
ThinkPad L series ThinkPad L series The ThinkPad L-series laptops from Lenovo were designed with the theme of "green". The first laptops in the series were described by Lenovo as being the environmentally friendliest products in the ThinkPad range. Key features that contributed to the eco-friendly tag were the use of recycled material for packaging and post-consumer recycled content (such as office water jugs and used IT equipment). The predecessor of the ThinkPad L series was the ThinkPad A series, conceived as a desktop replacement. The ThinkPad A series was discontinued in favor of two product lines, the ThinkPad R series and the