
The board is back.
Now available again for GBP 6.50 on sellmyretro.com.
http://www.sellmyretro.com/offer/detail ... _ZX81-2400
Here the board as sold (with ZX81 edge connector with "key"):
Here used in a development, at this time only power supply needed for a video board.

Development boards / projects could easily beeing changed by changing the slot card.
But better to have some more extender boards.
