P/N 1396810 - Model M3 Keyboard Details & Specs

Provided by the ASK Keyboard Part Number Database

IBM PS/2 L40SX Keyboard Assembly

A designation from my own type naming scheme used to categorise this keyboard with or from others by their common features and market intent but may/may not be derived from official names.
Model M3-based Laptop Keyboard Assembly
Possible companies responsible for making this keyboard for the company marketing it.
IBM, Lexmark
The name of the known switching mechanism that lies under this keyboard's keys.
IBM buckling rubber sleeves (M3/M4 rod-actuated type)
Earliest AppearanceEarliest Appearance
The year (and possibly the quarter) that this keyboard part number was introduced, first observed, first recorded or the first example found.
1991 Q2
Original KeycapsOriginal Keycaps
The keyboard's original keycaps' material and text/symbol printing technique.
PBT with dye-sublimated legends
Casing ColourCasing Colour
The original colour of this keyboard's outer casing. For keyboards whose casing materials are known to yellow, this will refer to the original colour before such transformation occurs.
Pearl White
The possible branding and logo styles found on this keyboard part number. This could be multiple styles at once or possible styles found over time.
The keyboard-to-host connection. This is could be a description of a cable (its colour, whether its coiled, whether its detachable, and what connector is at its end) or the name of a wireless technology.
Form FactorForm Factor
The standardised or universally acknowledged name for this keyboard's layout form factor.
Tenkeyless (compacted)
Image of Layout/LanguageThe original regional/language layout this keyboard was configured as. Both the language and the standardised key layout may be listed, and in the case of both being known or defined, it will be styled as language then standard.
Canadian French
Documents ("Doc"), websites and/or webpages ("Web") that were used as a source of information for this keyboard part number. Examples of this keyboard part number I own ("ASK") will also be included as sources.
Doc: IBM Laptop L40SX - Parts Listing (#PFAN-3QX835) [source: kev009]
Data Last Updated 2021-10-06

More on this type of keyboard...

Variant of a Model M3-based Laptop Keyboard Assembly
Variant of a Model M3-based Laptop Keyboard Assembly

The IBM Personal System/2 L40SX was an early laptop that featured IBM's first buckling sleeves keyboard assembly, which represented the first step of a major divergence in the Model M family that broke the largely buckling springs-based paradigm. Whilst not specifically designated a Model M, the L40SX's numeric keypad option with the same switches and the discrete Model M4 keyboards that used the same assemblies were designated members of the Model M family, and this was the origin for both.