Model 25 Type/Model Information
The IBM PS/2 Model 25 personal computer is an all-in-one unit. The
monitor and computer are in one case. In order to get a feel for what
your particular system is capable of, you need to find out what is
inside. In a perfect world, all the model numbers would be unique and
well documented. This being IBM, however, that isn't the case. For the
best possible assessment of what you have (or don't have), the best
thing you can do is open your system unit (see the instructions here) and take a look at it. This will answer your questions and builds your character (maybe).
Three specific systems and one upgrade model number exist as provided
by IBM. All four systems differ greatly in planar (mainboard) design,
processing speed, display, storage capability, and upgrade parts that
can be used. I've seen conflicting labeling on systems and sometimes
people do strange things, such as swapping monitor assemblies with a
lower end system.
Should you desire to see your system's type-model and serial
number, you will find them on a label underneath the lower left hand
corner of the monitor bezel. The system should be facing you, as in the
picture below.
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