Hi,
I am new in this forum and still can not post on german. Two questions:

1) can the citrine board be used to play with the sapphire?

2) on this link https://www.schach-computer.info/wik...Novag_Sapphire

it says that there are two types of sapphire one that runs at 20 Mhz and one that runs at 26,6 Mhz. Is there anyway to know what type of sapphire frecuency the model has without oppening it?

ricardo