Market Model Name/Feature Code
ThinkPad-style Discrete Full-Size UltraNav Keyboard
IBM ThinkPad scissor-stabilised rubber domes (misc. OEM)
Generic IBM logo, Old Lenovo logo
Dual-setting flip-out feet
Black straight fixed Type A USB
Synaptics TouchStyk & TrackPad UltraNav
Has an integrated two-port USB hub, also branded as either Lenovo USB Keyboard with UltraNav, Lenovo UltraNav Fullsize USB Keyboard (Japan only) or Lenovo ThinkPad Full-Size UltraNav USB Keyboard since 2005, exclusively branded as a Lenovo product from October 2014, alternative FRU number is 41A5157
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The SK-8835 was the largest member of the LITE-ON produced SK-8835/SK-884x ThinkPad-style keyboard family, uniquely featuring a dedicated numeric keypad that makes the keyboard effectively a full-size keyboard in the footprint of a traditional tenkeyless. Introduced in 2003, these made use of the Synaptics TouchStyk pointing stick and Synaptics TouchPad trackpad. Most part numbers were withdrawn by Lenovo in 2009. Market names include IBM USB Keyboard with UltraNav or Lenovo ThinkPad Full-Size UltraNav USB Keyboard.