USO (Unidentified System Unit)

Henk Gooijen henk.gooijen at
Mon Jan 11 11:33:47 CST 2016

I am pretty sure it is DEC made. Another manufacturer would
surely have sticked labeling from themselves on it ;-)
Viewed from the rear side (looking at the module handles),
the right side panel has no id labeling. The left side panel
might have one, but that side is completely covered by
a H??? power supply (forgot to write down the H number).
I will check next Saturday.

- Henk

-----Oorspronkelijk bericht----- 
From: Jay Jaeger
Sent: Monday, January 11, 2016 6:25 PM
To: cctalk at
Subject: Re: USO (Unidentified System Unit)

If it is DEC, and they haven't fallen off, then on the side panels on
one side or the other of the rows connectors there may be some


On 1/10/2016 11:31 AM, Noel Chiappa wrote:
>     > From: Henk Gooijen
>     > I could not find the M5950 nor M3020 in any module list.
> The M3020 (and M1131) are variants of the M302 (and M113, respectively), 
> so I
> don't think those are much of a clue. The M5950 I couldn't find anything
> about at all, but the M595 is a current mode converter for the DF11 - 
> which I
> can't find much about, although it's in the '73-'74 Peripheral Handbook -
> but that looks distinctly like a possibility, from the pictures there.
> Noel

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