March 18, 2023 – NEWKEY/80 “Ultra” for Model III/4

The NEWKEY/80 “Ultra” is now available for purchase from Plaid Vest Software. It is a USB keyboard and joystick adapter for the TRS-80 Model III/4. Features include:

  • Compatible with most standard USB keyboards
  • Also works with wireless 2.4Ghz USB keyboards (Note: Wireless keyboards need to be the “no drivers required” 2.4Ghz type)
  • Atari compatible 9-pin joystick port. (Note: A common 9-pin D-Sub or Atari joystick extension cable (not included) can be used in a similar fashion to route the joystick connector outside of the TRS-80 case)
  • Compact size. Mounts inside TRS80 case. (Note: Requires +5v and ground connections, a 4-pin Molex Disk Drive power splitter cable, and a plain 2-wire power connector; all of which are included)
  • Can work simultaneously with existing keyboard
  • Fast and accurate key response without keybounce or ghost characters
  • Native TRS-80 key repeat
  • Handles special keys independently (arrows, space, control, break, shift, @) for excellent compatibility
  • Works great with games and applications
  • Supports TRS80 control and multi-key sequences
  • Easily upgradable firmware to allow for enhancements and bug fixes

Visit for more details and for ordering.

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