[jwhat]

Hi vvuk,

I have a couple of spare O350 "2U Interface" boards in my study, there is no evidence of any EEPROM chip (aside from DALLAS obviously) on them...
but I should qualify that by saying I am not an electrical engineer ;-)

So likely PROM is either on the IO9 or the CPU board.

I will see about taking picture of boards.

I got the boards from a very well known ex-Nekochaner (I will leave it him/her to reveal themselves ... ;-) ) as part of need to rapidly move to different country's due to COVID.
Unfortunately the boards got very smashed up in shipping and have very bent FAN pins and Caps knocked off, but putting then to use helping to repair and keep these machines running is a good use of them.

BTW if you have 2 x O350 you can link them directly via Numalink ports without R-Brick (Numalink router).
Your only need the Numalink Router if you want to connect together 3 or more machines.

Cheers,

jwhat/John