Make this my favourite TI99/4A USB Keyboard Controller

Retro Inspired >> USB Controllers >> Retro Keyboards
Listing type:
Fixed Price Multiple Items
Item Condition:
Seller location:
Tynemouth, United Kingdom
Ending in:
28 days, 22h:37m:46s
Quantity Available
Latest buyer:
r***a (1)
Fixed price:
£60.00 Buy now!
20.00% VAT, Duty and handling fees may be payable on Price & Shipping on receipt
Shipping Costs:
From only £2.50
Payment methods:
Number Sold:
1 (View history)
Buyer Value Date and hour Quantity bought
r***a (1) £60.00 26/12/2022  15:57:41 1

Item Number : 62017

Meet the seller

tynemouthsw (98) User Offline

Contact the Seller
Add Seller To Favourites
See Other Items

View webstore Tynemouth Software

Fixed price: £60.00
Watch Item


This board will allow you to use the keyboard from a TI99/4A as a USB keyboard on a modern PC. (It will not let you use a USB keyboard on a TI99/4A). 

This can use useful for testing TI99/4A keyboards, or to convert a dead machine into a USB keyboard or integrate a Raspberry Pi or other single board computer inside.

The keys are all mapped in the firmware on the board to the most appropriate keys on a modern USB keyboard.

The TI-99/4A has quite a nice keyboard with individual mechanical keys witches, although a limited number of keys. The FCTN key is used to replace missing keys. FCTN + number keys on the top row act like functions keys F1 through F10, FCTN + keys with symbols on the front give those keys, FCTN + keys with arrows on give cursor keys. There is no delete or backspace key marked on the keyboard, so the FCTN + the key on the top right (+/=) is used for backspace.

This auction is for the built and tested USB keyboard controller board, a USB A-B lead and mounting pillars. No computer case or keyboard is included. 

See the photo gallery for mounting suggestions. The board is fitted on the underside of the lid of the case. Note the orientation of the PCB with respect to the keyboard.

There is a three pid header to wire up an LED to replace the one in the power supply (not included).

I am currently in the process of clearing out the stock of built and tested boards I have left. I have no plans to make any more of these USB keyboard controllers. 

Picture gallery

  • TI99/4A USB Keyboard Controller
  • TI99/4A USB Keyboard Controller
  • TI99/4A USB Keyboard Controller
  • TI99/4A USB Keyboard Controller
  • TI99/4A USB Keyboard Controller

Questions and Answers

Shipping and Payment

Item Location:
Tynemouth, United Kingdom
Shipping conditions:
Buyer pays shipping expenses
Shipping Costs:
  • To United Kingdom :
  • First Class Post : £2.50 For initial item, £2.00 Per additional item
  • First Class Signed For : £4.50 For initial item, £1.00 Per additional item
  • To EU :
  • Intl Signed For : £12.50 For initial item, £5.00 Per additional item
  • To USA :
  • Intl Signed For : £15.00 For initial item, £5.00 Per additional item
Shipment terms:
The items will be sent as a large letter.
International orders may be subject to delays and additional customs fees. Please be aware of this before purchasing.
Payment methods:

The seller accepts all responsibility for this listing

Page view: 2619