[vcf-midatlantic] Help identifying Apple II board

[Bob Shuster]

I found a card installed in one of my Apple II computers and I can find nothing about it online.  The only labels are a brand name - I think - “Elite” - and “YKH Interface” near the card edge.  It has a connector that plugs into one of the RAM sockets on the main board, so I assume it to be a RAM expansion, particularly since it’s populated by 8x16K RAM chips.

Pictures available at

https://drive.google.com/drive/folders/1tkRch5-lrEj65uZsJqKgxVGH-id4crRz?usp=sharing

Anyone?  I don't have an OS to run on these Apple IIs, just what they boot up to from the ROMs.

Bob Shuster