The T450's Hardware Maintenance Manual reads The system board has an accelerometer, which can be broken when several thousands of G-forces are applied.

The T450's Hardware Maintenance Manual reads The system board has an accelerometer, which can be broken when several thousands of G-forces are applied. Note: Dropping a system board from a height of as little as 6 inches so that it falls flat onto a hard bench can subject the accelerometer to as much as 6000 G's of shock. so it seems like at least some current ThinkPads still come with an accelerometer, and it's not in the disk.