P/N 1403599 - Model M15 Keypad Details & Specs

IBM Adjustable Keyboard Numeric Keypad Option

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 M15 Numeric Keypad
Possible companies responsible for making this keyboard for the company marketing it.
The name of the known switching mechanism that lies under this keyboard's keys.
IBM membrane buckling springs
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.
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 style of this keyboard's flip-out or extendable feet. If applicable, this may also state how many levels of height adjustment are available and whether the feet could be rubberised.
Multi-setting ergonomic feet
The protocol(s) this keyboard can use to speak to the host computer (eg, scancode sets).
IBM scancode set 2
Key CountKey Count
The number of keys that this keyboard originally had.
Form FactorForm Factor
The standardised or universally acknowledged name for this keyboard's layout form factor.
Data Last Updated 2021-05-17

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Variant of a Model M15 Numeric Keypad

The Model M15 numeric keypad was an optional accompaniment for the Model M15 adjustable keyboard. It takes the form of a 17-key buckling springs keypad based on Model M1/M2 design principles like its host keyboard and uses a proprietary modular connection. The keypad also has four flip-out feet to allow the user to match the profile of the host keyboard and its adjustable ergonomic feet. These are most likely the smallest official IBM buckling springs device available.