TrackPoint, trackpad & UltraNav keyboards
- Updated 12 November 2023
A common question asked by ThinkPad and keyboard fans alike is "what first-party TrackPoint keyboards are out there?" To tackle this, I've put together a list of all the major IBM and family TrackPoint, non-TrackPoint pointing stick and UltraNav keyboards, noting their features and giving a brief description. A succinct comparison of the possible pointing devices is also given near the start. Only keyboards that have PS/2, USB or Bluetooth connectivity are listed - tablet keyboards with proprietary connections or the infrared-based SK-8807 are presently excluded.
Contents
Symbols key
This topic uses several symbols intended to help provide key information and specifications at a glance. See below to find out what each symbol means, although note that the symbols that are photos show just a generalised version of a given characteristic and the keyboard's version of it may appear slightly different.
| Symbol | Meaning | Symbol | Meaning |
|---|---|---|---|
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This keyboard can feature a TrackPoint II pointing stick. |  |
This keyboard can feature a TrackPoint IV pointing stick. |
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This keyboard can feature a Lexmark-Unicomp FSR pointing stick. |  |
This keyboard can feature a Synaptics TouchStyk pointing stick. |
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This keyboard can feature an Varatouch pointing stick. |  |
This keyboard can feature an Optical TrackPoint pointing stick. |
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This keyboard uses medium-travel* buckling sleeve quiet and tactile key-switches. |  |
This keyboard uses full-travel* buckling spring clicky key-switches. |
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This keyboard uses full-travel* rubber dome quiet and tactile key-switches. |  |
This keyboard uses low-travel* scissor-stabilised rubber dome (scissor-switch) quiet and tactile key-switches. |
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This keyboard is either exclusively available with PS/2 connectivity or has PS/2 as an option. |  |
This keyboard is either exclusively available with USB connectivity or has USB as an option. |
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This keyboard is either exclusively available with Bluetooth connectivity or has Bluetooth as an option. |  |
This keyboard has 2.4GHz wireless connectivity as an option. |
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This keyboard has a pass-through port for a PS/2 mouse. |  |
This keyboard has an integrated two-port USB hub. |
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This keyboard has an Fn key in the bottom-left corner of the keyboard, and it may not be possible to swap Fn and Ctrl around. |
*Key-travel ratings are approximate; I'm considering 'low-travel' to be less than or equal to 2.5mm of full key-switch travel, 'medium-travel' about 3mm, and 'full-travel' more than or equal to 3.5mm.
Pointing stick comparison
These are brief descriptions of each pointing stick technology mentioned in this topic to give you an idea of how they may perform.
| Name | Sensing method | Description |
|---|---|---|
| TrackPoint II | Strain gauge | The original pointing stick TrackPoint. It operates much like the latest TrackPoints used by Lenovo although it lacks the negative inertia feature and suffers from comparatively-sluggish operation. The use of third-party tools like InterAccel can boost the performance of TrackPoint II significantly. TrackPoint II hosting keyboards never came with more than two mouse keys. |
| TrackPoint IV | Strain gauge | TrackPoint IV is the latest implementation of TrackPoint and is still used by Lenovo. If you've used a modern ThinkPad's TrackPoint, you know what to expect. Inherited from TrackPoint III, the IVs have the negative inertia feature that combats the sluggish feeling (inertia) of TrackPoint II. TrackPoint IV's specification also adds the possibility for a middle mouse button and press-to-select, but this may/may not be implemented outside of ThinkPad laptops. |
| Lexmark-Unicomp FSR stick | Force-sensing resistor | Unicomp's current pointing stick is an alternative technology to TrackPoint described in the original TrackPoint patent that they currently hold. The main difference between TrackPoint and this one is that the FSR technology requires the pointing stick to move like a joystick, which creates a different user experience compared to the isometric (stationary) TrackPoints. The performance of the FSR is limited by the adjacent keys surrounding the pointing stick, which results in a less-than-ideal performance from Lexmark/Unicomp pointing sticks. Lexmark-Unicomp FSR hosting keyboards never came with more than two mouse keys. |
| Synaptics TouchStyk | Force-sensing capacitor | The TouchStyk is technically a competing isometric technology against TrackPoint IV. Whilst the underpinning technology is different, TouchStyk's features are roughly equivalent to TrackPoint IV. Keyboards using TouchStyk should have acceptable performance. |
| Varatouch pointing stick | Presently unclear | The Varatouch is an isometric technology used in the "Touch Pad/Pointer" module for IBM Modular POS Keyboards. Keyboards using Varatouch should have acceptable performance. |
| Optical TrackPoint | Optical sensor | The Optical TrackPoint was short-lived and only featured on two Lenovo ThinkPad tablet keyboards. The technology is essentially like an optical mouse's sensor pointed upwards, which means you will need to swipe the surface of the stick to move your cursor. The Optical TrackPoint is generally considered the worst pointing stick out of all these. |
Brandon @ clickykeyboards.com - 1997 IBM model M4-1 keyboard with trackpoint (84H8470) 18-JUL-1997 and external numpad (84H8537) + spare keyboard assembly [accessed 2022-08-20]. License/note: photos used under fair dealing.
The IBM Space Saver Keyboard with TrackPoint II (alternatively known as the IBM Quiet Touch Keyboard [with TrackPoint II]) was the first marketed TrackPoint keyboard from IBM. Under designation M4-1, these were members of the Model M family with a standard M4 lacking a TrackPoint also known. M4-1 was produced for IBM by Lexmark, then Key Tronic and finally Unicomp at various stages, and is an adaption of the integrated Model M3 keyboard found on the IBM Personal System/2 L40SX laptop. Its IBM buckling sleeves key-switches are similar to what many early ThinkPads with Models M6 and M6-1 keyboard assemblies use. They differ from rubber domes by sitting externally to the keyboard's internal assembly and are designed to minimise mush on bottoming out. They entered production in 1992 and can be found with IBM, Lexmark or Unicomp branding, and in either pearl white or raven black case colours. IBM-branded ones stopped appearing around 2002, however, Unicomp versions were sold until 2010. Lexmark's and Unicomp's brand name for these was the Lexmark Quiet Touch Keyboard and Unicomp Mighty Mouse respectively. They all have a TrackPoint II pointing stick, sport a PS/2 mouse pass-through port and have a modular 10P10C jack for hooking up what was an optional numeric keypad.
The IBM TrackPoint II Keyboard (also called the IBM Keyboard with TrackPoint II or IBM Enhanced Keyboard with TrackPoint II) was the most well-known pointing stick keyboard from IBM and was a member of the Model M family under the designation "M13". These were full-travel buckling spring keyboards based on the IBM Enhanced Keyboard design and were one of the later variants of Model M introduced during Lexmark's tenure at the helm of the Model M family. It was available in the more iconic raven black, the more common pearl white and rarer industrial grey colours. The raven black M13 was produced by Lexmark and Maxi Switch and features white-text-on-black-background pad-printed keycaps due to the contrast limitations of dye sublimation used on most Model M keycaps. The pearl white and industrial grey M13s had typical Model M dye-sublimated keycaps. The pearl white version was produced by Lexmark, Maxi Switch and Unicomp, whereas only the latter two made industrial grey M13s. The last IBM-branded M13s from Unicomp such as the IBM 3494 Track Pointer Keyboard were produced as late as 2004, however, Unicomp continued marketing their own branded ones - Unicomp On-The-Stick - as late as 2008. Lexmark and Maxi Switch OEM IBM-branded M13s feature TrackPoint II pointing sticks as their marketing names imply, however, Lexmark-branded and all Unicomp-made M13s regardless of branding used Lexmark-Unicomp FSR sticks instead. Most M13s also have a PS/2 mouse pass-through port.
The IBM Japanese Keyboard/TrackPoint II (model 5576-C01) was a very rare Model M variant produced solely for the IBM PS/55E all-in-one computer for the Japanese market. It's a relative of the Model M13 and likewise uses buckling springs, has essentially the same internal electronics as a Lexmark or Maxi Switch OEM M13 and also has a PS/2 mouse pass-through port. However, given its intended market, it of course is only available with a Japanese JIS layout. 5576-C01 also features a unique rotating stand on the back that enables the user to park the keyboard upwards on its back wall. Being so rare, they are by far the most expensive TrackPoint keyboards. They entered the market in 1994 but it's unclear when they were discontinued. Unicomp eventually repurposed its tooling to make their EnduraPro keyboards seen below in this list.
Mechanical Keyboard Tryout - IBM KPD8923 Keyboard image gallery [accessed 2023-11-12]. License/note: photo used under fair dealing.
The IBM TrackPoint IV Keyboard (model KPD8923) was the only full-sized form-factor TrackPoint IV-equipped IBM keyboard presently known despite the fact a lot of marketing material and their boxes simply call them the IBM TrackPoint Keyboard. They were one of the many rebranded and modified Chicony KB-5923 rubber dome keyboards IBM fielded in the latter half of the '90s (others include the non-TrackPoint KB-3923 and KB-8923). This was one of the last variants of that Chicony design IBM utilised, introduced in 1998. Unusually for a TrackPoint IV device, these for some reason didn't include a middle mouse button. They also have a PS/2 mouse pass-through port.
The IBM Space Saver II (model RT3200) is the successor to the earlier Model M4-1 Space Saver Keyboard (hence the "II" in its name) and was introduced in 1999. They were completely different to its Model M-family predecessor though, instead featuring full-travel rubber dome key-switches, a more standard tenkeyless layout, Windows keys, and newer TrackPoint technology with a middle mouse button. Whilst RT3200s retain a PS/2 mouse pass-through port, they no longer support an external numeric keypad attachment, instead sporting an overlay numeric keypad on the alphanumeric keys much like the earlier Model M-based IBM Space Saving Keyboards. They were produced by NMB for IBM and their key-feel is relatively good, however, the keys are known to bind easily on off-centre key presses. RT3200s were extensively used in rack-mount server console kits.
Or
The Unicomp EnduraPro is the spiritual successor to the IBM 5576-C01 shown before, produced using the same moulds that Unicomp acquired from IBM or Lexmark during or not long after Unicomp's formation in 1996. Unicomp introduced the EnduraPro towards the end of 2000, but they made a few alterations to the design, including; removing the large rotating stand, installing FSR pointing stick technology, providing many different language options other than Japanese JIS, and modernising the design with Windows keys support. Unicomp also produced a USB variant which wasn't available at launch. Pearl white and raven black coloured options are available, and at one point in the mid-2000s, Unicomp offered the EnduraPro with white-text-on-black-background keycaps similar to the IBM-era raven black Model M13. As of Q2 2022, the EnduraPro was supposed to still be in production but supply chain issues are keeping Unicomp from offering it at the moment. Non-pointing stick counterparts are available - the Unicomps Ultra Classic and SpaceSaver M.
The Unicomp On-The-Ball Plus was a unique hybrid of the Models M5-2 (25mm trackball keyboard) and M13 introduced by Unicomp around 2000. Despite the trackball module, characteristics of the keyboard were essentially the same as any other Unicomp-made M13 and were likewise discontinued around 2008. They featured buckling springs, an FSR pointing stick and a PS/2 mouse pass-through port.
Or
The IBM TrackPoint Space Saver Keyboards could be seen as a NetVista-era take on the earlier RT3200 keyboard. It largely follows the same format as the RT3200 but includes some design elements like the top frame shape and the ThinkPad-style page back and forward buttons flanking the arrow keys that were typical of NetVista-era keyboards, making this an 89 (US English) or 90 (rest of world) key keyboard. They're also made by Chicony for IBM. KPD0035 is the PS/2 version with a PS/2 mouse pass-through port and KPH0035 is the USB version with a two-port USB hub. Both have four cable routing channels on the bottom and a TrackPoint IV pointing stick. They were introduced in 2001 and discontinued in 2003. They are known for having a particularly tall pointing stick that some users find sticks out a bit too much, as well as having a particularly long cable.
The IBM PS/2 Alphanumeric Point of Sale (ANPOS) Keyboard with Integrated Pointing Device is an enhancement to the earlier IBM Model M9 RANPOS Keyboard that adds a Synaptics TouchStyk pointing stick to the design. It is a member of the Model M extended family of buckling sleeve keyboards and a part of its Pre-Modular POS (Pre-MPOS) series. It first appeared around 2001, making it the earliest IBM keyboard with a TouchStyk known. Unlike most other keyboards on this list, POS keyboards were never intended for consumers and thus have very 'alien' to consumers features such as magnetic stripe reader and key-lock. They also have many extra keys used for custom layouts, giving them 116 (US English) or 117 (rest of world) keys with many of them having transparent keytops to hold paper with custom legends or symbols on them to the keys. Whilst PS/2 ANPOS used PS/2 for scancode generation as the name suggests, reprogramming them would require an RS485 serial connection that no home PC would be equipped to facilitate. It was available in pearl white, iron grey or storm grey case colours and produced by IBM's typical POS keyboard OEMs at the time - XAC and XSZ. PS/2 ANPOS was succeeded by the IBM MANPOS Keyboard in 2008, seen later in this list.
The IBM Compact Alphanumeric Point of Sale (CANPOS) Keyboard is technically an evolution of the IBM Model M9 RANPOS Keyboard that makes a radical departure from most previous IBM POS keyboards. It first appeared around 2002 and is a member of the Model M extended family of buckling sleeve keyboards and a part of its Pre-Modular POS (Pre-MPOS) series. Like the PS/2 ANPOS Keyboard shown above, it uses a Synaptics TouchStyk pointing stick. CANPOS keyboards with and without a magnetic stripe reader are known. They also have many extra keys used for custom layouts compared to consumer keyboards, giving them 133 (US English) or 134 (rest of world) keys with many of them having transparent keytops to hold paper with custom legends or symbols on them to the keys. Given the keyboard has a width less than a typical tenkeyless keyboard, CANPOS is a very 'dense' keyboard, packing a lot of functionality for its small size. Whilst they used PS/2 for scancode generation, reprogramming them would require an RS485 serial connection that no home PC would be equipped to facilitate. It's possible that CANPOS' layout was the inspiration behind the more consumer-oriented SK-8835. CANPOS was succeeded by the IBM MCANPOS Keyboard in 2008, seen later in this list.
The IBM USB Keyboard with UltraNav (model SK-8835) was the largest and currently the most sought-after and expensive member of the LITE-ON made SK-8835/SK-884x family. SK-8835 was introduced in 2003 and was visually based on the current flagship IBM ThinkPad of that time - the T30. Compared to actual ThinkPad laptop keyboard assemblies of the era, the SK-8835/SK-884x design is slightly different, thus they also feel different to any standard ThinkPad keyboard. SK-8835 is USB and features a two-port USB hub, but they also uniquely feature a dedicated numeric keypad compared to its 884x siblings. This makes the keyboard effectively a full-size in the footprint of a tenkeyless keyboard like the IBM CANPOS Keyboard. After 2005, they could be called Lenovo ThinkPad USB Keyboard with UltraNav or Lenovo ThinkPad Full-Size UltraNav USB Keyboard, with production mostly ending by 2010.
The IBM USB Travel Keyboard with UltraNav (model SK-8845, also known as IBM USB Travel Keyboard Option) was the most common non-server member of the LITE-ON made SK-8835/SK-884x family. SK-8845 was introduced in 2003 and was visually based on the current flagship IBM ThinkPad at the time its inaugural sibling, SK-8835, was introduced - the T30. Compared to actual ThinkPad laptop keyboard assemblies of the era, the SK-8835/SK-884x design is slightly different, thus they also feel different to any standard ThinkPad keyboard. SK-8845 is USB with a cable noted to be shorter than its server (SK-8845RC and SK-8845CR) counterparts seen later in this list and features a two-port USB hub. SK-8845 was also sometimes referred to as the IBM USB Keyboard with Integrated Pointing Device in some IBM literature like its later server counterparts. It seems SK-8845 was intended to be used in travel or for IBM desktops or ThinkPads connected to a docking solution. After 2005, they could be called Lenovo ThinkPad USB Travel Keyboard with UltraNav.
The IBM PS/2 Travel Keyboard with UltraNav (model SK-8840) was the only PS/2 member of the LITE-ON made SK-8835/SK-884x family. SK-8840 was introduced in 2004 and was visually based on the current flagship IBM ThinkPad at the time its inaugural sibling, SK-8835, was introduced - the T30. Compared to actual ThinkPad laptop keyboard assemblies of the era, the SK-8835/SK-884x design is slightly different, thus they also feel different to any standard ThinkPad keyboard. SK-8840 seems to have been primarily intended for servers and can be found with IBM 17" 1U Flat Panel Monitor Consoles. Since Lenovo didn't acquire IBM x86 Server Business until 2014 (by which time PS/2 was out of favour), Lenovo branded versions don't seem to exist. They were also called IBM 1U Monitor Console Keyboard or IBM Keyboard with Integrated Pointing Device PS/2.
Newegg - Refurbished: IBM Toshiba 00DN210 Anpos Modular POS Keyboard Lock & Key 00DN181 Point of Sale [accessed 2022-04-05]. License/note: retrieved via Wayback Machine (2022-04-05 capture), photos used under fair dealing.
Also known as the IBM ANPOS II Keyboard, Modular Alphanumeric Point of Sale (MANPOS) is the direct successor to the IBM PS/2 ANPOS Keyboard with Integrated Pointing Device seen before (hence the "II" in its alternative name) and is a member of the Model M extended family of buckling sleeve keyboards and a part of its Modular POS (MPOS) series. It was introduced in 2008 alongside the IBM MCANPOS Keyboard seen below and is a distant relative of the IBM Model M9 RANPOS Keyboard. Compared to its predecessor, it's been redesigned to have its core POS-related features removable and thus can be replaced as needed or filled in with hollow blanking modules. It's able to accept both PS/2 and USB cables, can be reprogrammed (via USB cable only) and can accept a Touch Pad/Pointer module to give it UltraNav-like functionality. The pointing stick on the module is a Varatouch pointing stick typically using IBM Retail's signature desaturated blue nub cap. It has 116 (US English) or 117 (rest of world) keys like its predecessor albeit slightly rearranged and was available in pearl white, iron grey or storm grey case colours. After Toshiba TEC bought IBM Retail Store Solutions in 2012, the then-new Toshiba Global Commerce Solutions continued producing MANPOS under their own brand to much the same design and remains in production as of Q4 2022 although the pearl white version seems to have been discontinued. Due to the fact the Touch Pad/Pointer module is removable, many MANPOS keyboards may lack any pointing device when sold but the module can be bought separately.
Also known as the IBM CANPOS II Keyboard, Modular Compact Alphanumeric Point of Sale (MCANPOS) is the direct successor to the original IBM CANPOS Keyboard seen before (hence the "II" in its alternative name) and is a member of the Model M extended family of buckling sleeve keyboards and a part of its Modular POS (MPOS) series. It was introduced in 2008 alongside the IBM MANPOS Keyboard seen above and is a distant relative of the IBM Model M9 RANPOS Keyboard. Compared to its predecessor, it's been redesigned to have its core POS-related features removable and thus can be replaced as needed or filled in with hollow blanking modules. Like MANPOS, it's able to accept both PS/2 and USB cables, can be reprogrammed (via USB cable only) and can accept a Touch Pad/Pointer module to give it UltraNav-like functionality. The pointing stick on the module is a Varatouch pointing stick typically using IBM Retail's signature desaturated blue nub cap. It's also a very 'dense' keyboard like its predecessor, with 133 (US English) or 134 (rest of world) keys packed in a width less than a tenkeyless keyboard. It was only available in grey case colours. After Toshiba TEC bought IBM Retail Store Solutions in 2012, the then-new Toshiba Global Commerce Solutions continued producing MCANPOS under their own brand to much the same design and remains in production as of Q4 2022. Due to the fact the Touch Pad/Pointer module is removable, many MCANPOS keyboards may lack any pointing device when sold but the module can be bought separately.
The Lenovo ThinkPad USB Keyboard with TrackPoint (model SK-8855) was the last new classic ThinkPad style desktop keyboard that wasn't based on an earlier design. Like the SK-8835/SK-884x predecessors, these were made by LITE-ON for Lenovo. They're visually based on the keyboards for T400s to T420 era ThinkPads, featuring the signature enlarged escape and delete keys typical for this era. Unlike the SK-8835/SK-884x series, actual ThinkPad laptop keyboard assemblies of the era can be swapped into the SK-8855 although issues with using the Fn layer and left Windows key may appear. These tend to be the most expensive ThinkPad-branded keyboards.
The IBM UltraNav USB Keyboard (model SK-8845RC) was the most common server member of the LITE-ON made SK-8835/SK-884x family. SK-8845RC was introduced by 2010 and was visually based on the current flagship IBM ThinkPad at the time its inaugural sibling, SK-8835, was introduced - the T30. Compared to actual ThinkPad laptop keyboard assemblies of the era, the SK-8835/SK-884x design is slightly different, thus they also feel different to any standard ThinkPad keyboard. SK-8845RC is a USB keyboard with a cable noted to be longer than its consumer (SK-8845) counterpart seen earlier in this list and features a two-port USB hub. They seem to be originally bundled with IBM 1U 17-inch and 19-inch Flat Panel Console Kits intended for use with rack-mounted IBM System x and BladeCenter servers, then later made available with a new part number nomenclature for the IBM System x as the IBM Keyboard with Integrated Pointing Device USB.
The Lenovo ThinkPad Tablet 2 Bluetooth Keyboard with Stand (model EBK-209A) was the companion keyboard for the Lenovo ThinkPad Tablet 2, produced by Sunrex Technology for Lenovo as per the keyboard's FCC ID. It's also the earliest discrete AccuType-style keyboard but suffers from several key-size compromises necessitated by its small size to match its host tablet. EBK-209A was introduced in 2012 and is compatible with other Windows and Android devices. New-in-box examples can still be found as of Q3 2022.
The IBM Keyboard with Integrated Pointing Device USB (model SK-8845CR) was the final member of the LITE-ON made SK-8835/SK-884x family. SK-8845CR was introduced by 2013 and was visually based on the current flagship IBM ThinkPad at the time its inaugural sibling, SK-8835, was introduced - the T30. Compared to actual ThinkPad laptop keyboard assemblies of the era, the SK-8835/SK-884x design is slightly different, thus they also feel different to any standard ThinkPad keyboard. SK-8845CR is a USB keyboard, has an integrated two-port USB hub, and was the only member of the family to lack a trackpad. IBM first used the SK-8845CR with their 1U 18.5-inch Standard Media Console, which later became Lenovo branded. Interestingly, Lenovo designates these as the Lenovo UltraNav Keyboard USB despite specifically noting "This keyboard does not include a trackpad/touchpad". IBM also introduced a release for the IBM Storage Appliance 2421 Model AP1 in 2015. This makes this the last IBM-branded ThinkPad-derived/style product introduced.
The Lenovo ThinkPad Compact Keyboard with TrackPoint is presently the most common modern discrete TrackPoint keyboard available, produced by Chicony for Lenovo and introduced in 2013. Their closest real ThinkPad laptop keyboard analogue was the T430-era ThinkPads and indeed their key-feel is closer to era-appropriate ThinkPad laptop keyboard assemblies than SK-8835/SK-884x family keyboards were to their era-appropriate analogues. Two versions of this keyboard are known; KU-1255 (the USB version) and KT-1255 (the Bluetooth version). A known weakness with these is the fragility of their micro-B USB ports. New in box examples can still be found as of 2021 Q4.
MAYSA Store @ AliExpress - 4X30K12182 for Lenovo ThinkPad Keyboard Support Window Android IOS Multi Connect with Trackpoint US English KT-1525 [accessed 2023-11-09]. License/note: photos saved from AliExpress listing, used under fair dealing.
The Lenovo ThinkPad Multi Connect Bluetooth Keyboard with TrackPoint (model KT-1525) is a variant of the KT-1255 that can be used with multiple devices. It's only been seen with a US ANSI layout and seems to have been only sold in China. Not much else is known about it in the west.
Lenovo - ThinkPad TrackPoint Keyboard II - Overview and Service Parts [accessed 2022-10-02]. License/note: used under fair dealing.
The Lenovo ThinkPad TrackPoint Keyboard II (model KC-1957) is the current discrete TrackPoint keyboard being offered by Lenovo and is the successor to both the KU-1255 and KT-1255. These are visually based on the keyboards for T14-era ThinkPads. The KC-1957 offers two wireless connectivity options as standard; Bluetooth with Windows and Android officially supported and 2.4GHz wireless connectivity via a USB dongle. The "KC" in the model number indicates these were likely produced by Chicony for Lenovo.
Internal
External
- Brandon @ clickykeyboards.com - 1997 IBM model M4-1 keyboard with trackpoint (84H8470) 18-JUL-1997 and external numpad (84H8537) + spare keyboard assembly [accessed 2022-08-20]. License/note: photos used under fair dealing.
- Mechanical Keyboard Tryout - IBM KPD8923 Keyboard image gallery [accessed 2023-11-12]. License/note: photo used under fair dealing.
- Crizender#8942 - donated photos.
- Newegg - Refurbished: IBM Toshiba 00DN210 Anpos Modular POS Keyboard Lock & Key 00DN181 Point of Sale [accessed 2022-04-05]. License/note: retrieved via Wayback Machine (2022-04-05 capture), photos used under fair dealing.
- MAYSA Store @ AliExpress - 4X30K12182 for Lenovo ThinkPad Keyboard Support Window Android IOS Multi Connect with Trackpoint US English KT-1525 [accessed 2023-11-09]. License/note: photos saved from AliExpress listing, used under fair dealing.
- Lenovo - ThinkPad TrackPoint Keyboard II - Overview and Service Parts [accessed 2022-10-02]. License/note: used under fair dealing.
| 2023-11-12 | Revisions for TrackPoint, trackpad & UltraNav keyboards topic have been published - Improved some photos, fixed broken sources, tweaked placement of the part number/guide/etc. buttons & gave KT-1525 its missing symbols |
| 2023-11-10 | Revisions for TrackPoint, pointing stick and UltraNav keyboards topic have been published - Fixed some broken images & updated some info for SK-8835/884x and KU/KT-1255 |
