Item description:

PS2Ident is an identification tool that allows dumps of a PlayStation 2 console's ROM chips and MECHACON NVRAM to be made.
It will also gather data from the console, for research purposes.

It has the following features:

Dumps ROM chips (BOOT and DVD ROM) as a whole, not according to their contents (rom0, rom1, rom2 and erom)
Displays the actual addresses for DEV1 (rom1, rom2 and erom) that are set by the ROM filesystem drivers.
Coloured user interface that is easy to use.
Supports dumping to memory cards and USB mass storage devices.
Supports multi-languages, which include the 8 supported languages by the PS2
Gathers data of all known parts of the PS2.
Attempts to automatically match the chip/part name with the version number of the part.
Supports all PlayStation 2 consoles, including the SCPH-10000 and SCPH-15000, and the PSX (DVR unit).

Note: Chip and mainboard identification is currently very incomplete and inaccurate, due to a lack of data.

Sometimes, Sony makes hardware revisions without changing the chip implementation numbers as well, hence why chip identification may be inaccurate.

The chip and version IDs are, however, accurate since they are taken directly from the hardware.

Its database, which contains the parts and mainboard data, is managed and updated with the PlayStation 2 Ident DataBase Management System (PS2IDBMS) tool.

Such a change was made because it wasn't possible to get a complete list of all PlayStation 2 models in existence. With PS2IDBMS, a spreadsheet containing all recorded models can be generated automatically.
Not to mention that the whole PS2Ident tool would have to be recompiled, whenever model data was added.