P/N 1390120 - Model M Keyboard Details & Specs
| Known Assembly Part NumbersKnown Assembly Part Numbers Possible numbers found inside this keyboard used to indicate its internal assembly and the keycaps on it. |
1386085 |
| Known Package/Box Part NumbersKnown Package/Box Part Numbers Possible numbers assigned to the original packaging this keyboard was shipped in. |
1390119 |
| TypeType 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 Enhanced PC Keyboard |
| OEMOEM Possible companies responsible for making this keyboard for the company marketing it. |
IBM U.S. |
| Key-switchesKey-switches 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 Q1 |
| 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 |
| BrandingBranding 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 silver square badge |
| FeetFeet 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 |
| ProtocolProtocol The protocol(s) this keyboard can use to speak to the host computer (eg, scancode sets). |
IBM scancode set 1 & 2 autosense |
| Key CountKey Count The number of keys that this keyboard originally had. |
101 |
| Form FactorForm Factor The standardised or universally acknowledged name for this keyboard's layout form factor. |
Full-size |
Layout/LanguageLayout/Language The 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. |
US ANSI |
| Source(s)Source(s) 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. |
ASK: SNKB-M1986-EXT-101 |
| Data Last Updated | 2022-04-06 |
More on this type of keyboard...
The PC-compatible IBM Enhanced Keyboard was the first home consumer, most common and the definitive Model M keyboard, becoming IBM's choice keyboard for a decade after its release and still in production today as the Unicomp Classic. Labelled as being "enhanced" in regards to its layout that became an industry standard and is still used today (with the addition of GUI keys), the Model M is perhaps the most well-known keyboard of all time thanks to the success of the Enhanced Keyboard. The Enhanced Keyboard was also made available for IBM's earlier "classic" Personal Computer series in both XT and AT flavours, and several other distinct variants exist for other types of systems and custom orders from third-party companies such Ambra/ICPI, Dell, General Electric Healthcare and Sabre.
