Apple has made a downloadable version of Micromat's TechTool Deluxe available for customers who are part of its Apple Protection Plan (APP).

The software is a powerful diagnostic utility that allows users to test their computer's critical system components, such as the processor, RAM (random-access memory), VRAM (video random-access memory) and hard disk.

The software will also repair a Mac's disk structure and rebuild its directories as necessary.

The move to make the software downloadable reflects Apple and Micromat's constant difficulty ensuring that the latest CDs containing the utility were available with the latest Macs. Now a download, it's a much easier way to ensure users possess the latest version of TechTool Deluxe.

APP members who want to download the software will be required to enter a serial number to access the page.