FRU HDD looks different and HDD door does not fit on replacement HDD. FRU HDD does not work or fit in external device (USB) or 2nd HDD adapter.

Any of the following ThinkPad systems running the Windows XP operating system:

• ThinkPad X40 (type 2369, 2370, 2371, 2372, 2382, 2386)
• ThinkPad X41 (type 1864, 1865, 2525, 2526, 2527, 2528)
• ThinkPad X41 Tablet (type 1866, 1867, 1869)
  

New FRU must be plugged into primary slot only. Users who require software HDD cloning will need to ensure that they clone to the new HDD inserted in primary slot.

Two alternate FRU are being provided as replacements for the HDD originally shipped. The new devices are functionally equalivent in speed and capacity, but the new FRU drives are limited to operate in primary HDD slot only. There is a mechanical tab that prevents users from plugging the new FRU drive into the 2nd HDD adapter. The new FRU drives require 3.3 volts to operate and external adapters typically supply 5.0 volts. The drive will not operate at 5.0 volts.

If a second hard drive is required for use in the 2nd hard drive adapter while installed in the X4 dock, then the following OBI hard drives will fit and function in the 2nd drive adapter.

The photos below illustrates the mechanical differences of the new FRU drives.