Help Identifying UMC 486 SBC Motherboard \ VOGONS

Help Identifying UMC 486 SBC Motherboard

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First post, by ajacocks

Posted on 2021-04-09, 22:36

ajacocks Offline

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Joined: 2017-07-10, 15:33
Location: Maryland, USA

I just acquired this UMC-based SBC 486 motherboard, from eBay:

D3D2D857-B40F-4F1C-AE39-3871DFCCC259.jpeg

And here is the back:

646FD4AF-CB41-4E38-AE9E-05CB9B64DBF0.jpeg

It came among with this attached VGA card:

219FD2B3-76BD-4FED-8A8C-CF9650F00A1C.jpeg

The only label on the board is INS-UMB486DX/LAN/CACHE. I’m guessing that “INS” is either the manufacturer, or a shortened version of “industrial single board computer.” Neither the LAN nor the cache options seem to be populated, on the board. The board has jumper settings for CPU speeds between 20 and 80 MHz.

Any suggestions are welcome. I can figure out most of the headers, but some are mysterious.

- Alex

Reply 1 of 3, by Warlord

Posted on 2021-04-09, 22:50

Warlord Offline

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Sick, those headers are for modules, theres probably seperate lan and cache modules. I looked everywhere, I tried searching for the VGA part number and came up with nothing as well.

Searching for PTP MV-1 I get alot of results. So I guess PTP is the manufacturer of the PCB anyways.

Reply 2 of 3, by ajacocks

Posted on 2021-04-09, 23:18

ajacocks Offline

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Rank: Member
Posts: 168
Joined: 2017-07-10, 15:33
Location: Maryland, USA

Here is the location (I think) for the unpopulated RJ45 port, and the onboard LAN IC:

480817C5-51E2-4E95-9B3E-3D9C2D0DE13E.jpeg

The missing cache, I believe, would be here:

B1F2CB6B-75D0-4D48-9A08-927A85F85122.jpeg

- Alex

Reply 3 of 3, by ajacocks

Posted on 2021-04-15, 14:39

ajacocks Offline

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Rank: Member
Posts: 168
Joined: 2017-07-10, 15:33
Location: Maryland, USA

Has anyone seen anything similar?

- Alex

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