SNKB-M2005-BT4-122
Notes
This keyboard originally came into my possession with worn case texture and a yellowed set of Unicomp's sparkly blue-grey keycaps with IBM 5250 US English legends. The keyboard was partially restored with a brand-new Unicomp PC-122 case (original lock-light overlay also transferred to the new case) and a combination of Unicomp's pearl/pebble US and 3270 PC keycap sets, and several UK ISO and custom (Fn and 1u backspace) keycaps. In June 2024, an authentic replacement keycap set was fitted. This keyboard was also featured in my Differences between and classifications of 122-key Model Ms comparison topic.
| Full Name | Affirmative YESboard 5250 PC 122-key Keyboard |
| Part NumberPart Number The number used to describe this keyboard's specific release; usually specific for a target region, language or SKU, etc. |
AC40956 |
| 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. |
1225T |
| 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 Type IV 122-key Host Connected Converged Keyboard |
| NicknameNickname 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. |
Battlecruiser |
| KeyswitchesKeyswitches The name of the keyswitches this keyboard uses. If the keyswitches used do not have a known name, a generic description of what they are will be provided. |
IBM membrane buckling springs |
| Original KeycapsOriginal Keycaps The keyboard's original keycaps' material and text/symbol printing technique. |
PBT with dye-sublimated legends |
| 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 elongated flip-out feet |
| ProtocolProtocol The protocols this keyboard can use to communicate with their host systems. Typically, this is the name of some sort of serial or parallel data connection. Known scancode sets the protocol can support may also be stated in brackets. |
IBM Mode 2 (scancode set 2) |
| 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. |
Black coiled-style fixed 6-pin mini-DIN PS/2 cable |
| Form FactorForm Factor The standardised or universally acknowledged name for this keyboard's layout form factor. |
120% |
| Production Date | 2005-03-28 |
| Acquisition Date | 2020-10-05 |
