P/N 1390359 - Model M SSK Keyboard Details & Specs

Provided by the ASK Keyboard Part Number Database

IBM Space Saving Keyboard

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 M Space Saving Keyboard
A [keyboard enthusiast] community given name for this keyboard. It can be a shortening of its name and properties, a more abstract term, a real-life reference, or metonymy.
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.
1986 Q3
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.
IBM grey oval badge
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.
Single-setting flip-out feet
The protocol(s) this keyboard can use to speak to the host computer (eg, scancode sets).
IBM Mode 2 (scancode set 2)
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.
Grey coiled-style detachable 6-pin SDL to PS/2 mini-DIN cable
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.
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.
Additional NotesAdditional Notes
Extra notes about this keyboard that may be of interest or are important to know.
Prototypes spotted from as early as July 1986, production examples started appearing in Q1 1987
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.
Web: https://www.flickr.com/photos/phosphorglow/albums/72157665323435521
Web: https://web.archive.org/web/20221006201507/https://www.ebay.com/itm/255748057802?orig_cvip=true
Data Last Updated 2022-10-06

More on this type of keyboard...

Variant of a Model M Space Saving Keyboard
Variant of a Model M Space Saving Keyboard
Variant of a Model M Space Saving Keyboard
Variant of a Model M Space Saving Keyboard
Variant of a Model M Space Saving Keyboard

The Space Saving Keyboard (SSK) was the tenkeyless and compacted version of the IBM Enhanced Keyboards available as an option for the IBM Personal System/2 series of computers. These are perhaps the most well-known Model M variant besides the Enhanced Keyboard. The fact that they weren't bundled with any systems and numeric keypads were viewed more favourably during the '80s, SSKs are relatively rare. As an attempt to provide an alternative to the loss of the numeric keypad, a togglable numeric keypad layer is present across the right side of the alphanumeric keys. They have since been spiritually succeeded by the Unicomp Mini Model M.