P/N 98U0151 - Model M4-1 Keypad Details & Specs
Provided by the ASK Keyboard Part Number Database
| 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 M4-1 Space Saver Numeric Keypad |
| OEMOEM Possible companies responsible for making this keyboard for the company marketing it. |
Unicomp |
| Key-switchesKey-switches 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. |
2000 |
| Cover ColourCover Colour The original colour of this keyboard's cover set (outer casing). For keyboards whose cover set 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. |
None |
| 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 |
| ConnectionConnection 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. |
Detachable modular-10P10C ("RJ-50") to modular-10P10C ("RJ-50") cable |
| Key CountKey Count The number of keys that this keyboard originally had. |
17 |
| Form FactorForm Factor The standardised or universally acknowledged name for this keyboard's layout form factor. |
Keypad |
| Earliest Recorded PriceEarliest Recorded Price The earliest price, currency and year of record found for this keyboard part number. |
$30 USD in 2004 |
| 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. |
Web: https://web.archive.org/web/20040511024618/http://store.yahoo.com/pckeyboards/migmouswitnu.html |
| Data Last Updated | 2024-08-21 |
More on this type of keyboard...
The IBM Model M4-1 Space Saver Numeric Keypad was the complimentary numeric keyboard option available for pairing with Model M4-1 keyboards. It features the same assembly design as the Model M3 numeric keypad, however, the case is enlarged to match the design of the host keyboard and various layout variations exist - most commonly, an extra "00" key is added at the expense of reducing the "0/Ins" key to a single key-unit size. Without modification, these keypads can only be used when coupled to an M4-1 (or M4) host keyboard via a modular 10P10C ("RJ-50"-like) cable. The only real difference between this M4-1 version and the M4 version is purely the sticker on the back.
