DEC RK11-C Disk Controller - on ebay...or is it?

Ethan Dicks ethan.dicks at
Mon Feb 8 17:16:51 CST 2021

On Mon, Feb 8, 2021 at 5:53 PM Bill Degnan via cctalk
<cctalk at> wrote:
> If you search ebay for "DEC RK11-C Disk Controller", you'll find a listing
> of a backplane of flipchip cards, but it's not like any RK11-C I have ever
> seen.  Am I right, this is a mis-labeled auction?

It seems to match fairly well with the module layout for the standard
(non-double-buffered) RK11-C at
(slot 1 on the right)

I can't recall mine to a high amount of detail, but that looks about right.

The ribbon cables are a bit out of place... perhaps they were just
stuffed into empty slots to keep them from being damaged.


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