ThinkPad UltraBay

UltraBay is originally IBM's name for the swappable drive bay in the ThinkPad range of laptop computers.

The IdeaPad Y400 and Y500 laptops have an UltraBay slot which can be swapped for another hard drive, another fan or another Nvidia GT650M (or GT750M)[1] GPU which will work in SLI with the system's primary video card for increased graphics performance.

Existing orders for the UltraBay Y500 DVD Burner (no built in optical drive) were cancelled in early June, 2013.

[citation needed] Starting in 2014, Lenovo changed the design of the ThinkPad bay adapter and dropped the "UltraBay" terminology from use.

Battery expansion in the caddy bay was no longer offered, and earlier hot-swap functionality was essentially rendered difficult if not impossible.