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 Most part numbers were withdrawn by Lenovo in 2009.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.