Total capacity requirement for Lenovo ExpressCache is around 142 M.
The Lenovo ExpressCache software is ready for use after you install it on your computer. If you are instructed by an earlier-version user guide to enter an activation code for the Lenovo ExpressCache software, please ignore the instruction.
The Lenovo ExpressCache software provided is designed only for the ThinkPad 16GB mSATA Solid State Cache Drive (product part number: 0B47309). For the mSATA solid-state drives that come with your computer, use the Lenovo ExpressCache software preinstalled on your computer.
If your system was built with the 16GB mSATA drive , but the ExpressCache software was not installed, please refer to the following document
Hard Drives: Reference Guide - A list of other internal and external notebook hard drives. Also has additional information which includes: User Handling Tips for Hard Drives, Lenovo Hard Drive Quick Test, Avoiding Hard Drive Damage, and Lenovo Hard Disk Drive Retention program information.