DEC QBUS Backplanes

[Jerry Weiss]

We had a few third party backplanes arranged like this.  This allowed 
them to put a small MFM hard drive or 8 inch floppy in empty  area next 
to the 4x2 (2x4?) slots of rack-mount 3U or 4U sized unit.  I don't 
recall any that were a mix of A-B, C-D.  Ours were A-B, A-B.

     Jerry

On 4/17/20 8:48 PM, Nigel Johnson via cctalk wrote:
> The actual sockets were always labelled with Digital's trademarks, but 
> they sold them to OEMs to do what they like with them.  We OEM'd for 
> the Components Group, at one time placed a million dollar order of 
> stuff including boxes of those backplane sockets!
>
> cheers,
>
> Nigel
>
>
>
> On 17/04/2020 21:40, Paul Anderson via cctalk wrote:
>> I remember the VT72 had a non-standard backplane in it, but I don't
>> remember the details.
>>
>> Paul
>>
>> On Fri, Apr 17, 2020 at 8:10 PM Bill Gunshannon via cctalk <
>> cctalk at classiccmp.org> wrote:
>>
>>> On 4/17/20 8:36 PM, Chris Zach via cctalk wrote:
>>>> Hm. Plessy backplane?
>>> No name on the phenolic board part but the QBUS sockets are labeled
>>> "Digital Equipment Corporation".
>>>
>>> bill
>>>
>>>
>
>