Lenovo UltraBay

UltraBay is Lenovo's name for the swappable drive bay in the ThinkPad range of laptop computers. Introduced with the ThinkPad 750 series, this technology has gone through redesigns with almost every new generation of ThinkPad, leading to some confusion. The following table gives an overview of the different UltraBay types, in which models they occurred and which drives are available for them. Note that the optical drive bay in G series and R40e series ThinkPads is not an UltraBay in that the drives are fixed and not removable. It is however, mechanically, an Ultrabay 2000-device without the surrounding "caddy".

On the media side different UltraBays relate to the form factor of the drives they accept; for example, early A, T and X series models can accept UltraBay devices up to 12.5 mm thick, whereas current T and X series machines are limited to devices no more than 9.5 mm thick.

Nomenclature