The ThinkPad does not recognize the ultrabase thus making it useless. The pro's have checked with our Product Manager and apparently there isn't any driver for ThinkPad X4 Ultra Base. I downloaded the CMD Ultra DMA IDE driver as they had suggested still no change.
The part number on the X4 ultrabase: PN: 91P9283
What can I do so that the computer will recognize the ultrabase?
I have extra bases and tried a new one and no change. Bob