P/N 4Y40U90597 - TrackPoint Keyboard Details & Specs

Provided by the ASK Keyboard Part Number Database

Lenovo ThinkPad Compact Bluetooth Keyboard with TrackPoint

FRU Part NumberFRU Part Number
Field Replaceable Unit
The number used to relate and indicate compatible but otherwise potentially different keyboards that could replace this one.
03X7718
Market Model Name/Feature CodeMarket Model Name/Feature Code
The consumer-friendly model number describing this keyboard as a part of a range of products, usually irrespective of target region, language or SKU.
KT-1255
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.
Precision ThinkPad TrackPoint Keyboard
OEMOEM
Possible companies responsible for making this keyboard for the company marketing it.
Chicony
Key-switchesKey-switches
The name of the known switching mechanism that lies under this keyboard's keys.
Unspecified, OEM-specific or misc. scissor-switch implementation
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.
2017 Q3
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.
Raven (Stealth) Black
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.
Old Lenovo logo & ThinkPad branding, Old Lenovo logo & ThinkPad branding
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.
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.
Bluetooth
Layout/LanguageLayout/Language
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.
UK English
Built-In MouseBuilt-In Mouse
Possible pointing devices this keyboard could carry. This could be a brand name, name of the sensor technology behind it, or a generic description in lieu of the former details.
TrackPoint IV strain gauge pointing stick
Accessories & Other FeaturesAccessories & Other Features
Other notable features you may want to know about such as charging cables (if keyboard is wireless), fingerprint reader, card reader, solenoid, DIP switches, etc.
Charged via Micro-B USB cable
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.
Doc: Lenovo ThinkPad Compact Bluetooth Keyboard with TrackPoint (KT-1255) - Overview and Service Parts (#PD026744) [source: Lenovo]
Data Last Updated 2023-11-10

More on this type of keyboard...

The AccuType ThinkPad Keyboard was Lenovo's replacement to the long line of classic Model M6/M6-1 derived keyboard designs introduced in 2011 with Lenovo ThinkPad X1 and deployed as the sole ThinkPads keyboard design the following year. The AccuType's keytops are wider than before and the switches have reduced key travel, but they still largely resemble the feel of previous classic ThinkPad keyboards. All standard versions feature a TrackPoint IV pointing stick.

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