The first image is a scan of the back of the box for an Irwin XL 20 Excelerator, which shows a board that is nearly identical to the board pictured in the original posting. Judging by the numbering I can see, the board I have here may be one produced about 400 boards after the one in the original posting.
[SIZE=10pt]I found I had multiple Irwin and Orion utilities diskettes, 4 in total, probably spanning a 3 to 4 year period and 3 revisions, although whether there is anything on the first dubious Orion utilities diskettes I cannot tell, yet, as I do not have the power on at home, yet. There definitely was (I can remember) the utility software on the Irwin diskette.[/SIZE]
[SIZE=10pt]I also have one version of the Irwin Excelerator Installation and User's Manual (36 pages), but there are likely differences between the Irwin and the Orion, so the Irwin manual is not completely valid for the Orion, although some of the information would be the same. I suspect there could be still later versions of the Irwin manual as the daughterboard I have has a connector for output to a large format display grand-daughterboard (?), yet there is nothing about this grand-daughterboard mentioned in the version of the manual here. I would be happy to scan the entire manual, when I can find a scanner that handles its specific page format correctly. I am not sure what the authority's ideas are on members scanning and uploading manuals ?[/SIZE]
[SIZE=10pt]I may have a sheet or leaflet of instructions for the Orion version of the accelerator. I should have it, but I have not found it yet. I also should have, but have yet to locate, a roundup of SE accelerator cards issued as a special report by either MacWorld or MacUser (published both in the monthly magazine, and published separately as contemporary standalone guide to all known accelerator cards).[/SIZE]
The piggyback connector at top right is for a "grand-daughterboard" PowerView large screen video system, which is not mentioned at all in the version of the manual / user guide / installation instructions I have found.
People with this daughterboard are far better off with the later FDHD / Superdrive version of the Mac SE, because (from memory) the earlier versions of the SE had a motherboard that slid in on rails, which makes things difficult, compared to later versions of the SE which had a combined pivoting (like a hinge) & sliding arrangement for inserting the motherboard. What I mean is: if someone is going to install this card in an SE, it is preferable to find a later SE to do the installation with.
[SIZE=10pt]I am back in Australia and feeling sick of it already after only one day in my home town. When I did this the last time, which was a year ago, the sickness was almost immediate, it only took me about 45 minutes to start feeling sick last year, by which I mean 45 minutes after the aeroplane landed in Sydney, which is about 7 hours before I reached my home town 600 km from Sydney. Maybe my former limited immunity to Australia is increasing with repeated annual exposure to Australia.[/SIZE]
[SIZE=10pt]But the good news is none of the two Mac SE motherboards or the one SE/30 motherboard here has suicide battery syndrome. But the SE/30 capacitors are ailing.[/SIZE]
[SIZE=10pt]I found I had multiple Irwin and Orion utilities diskettes, 4 in total, probably spanning a 3 to 4 year period and 3 revisions, although whether there is anything on the first dubious Orion utilities diskettes I cannot tell, yet, as I do not have the power on at home, yet. There definitely was (I can remember) the utility software on the Irwin diskette.[/SIZE]
[SIZE=10pt]I also have one version of the Irwin Excelerator Installation and User's Manual (36 pages), but there are likely differences between the Irwin and the Orion, so the Irwin manual is not completely valid for the Orion, although some of the information would be the same. I suspect there could be still later versions of the Irwin manual as the daughterboard I have has a connector for output to a large format display grand-daughterboard (?), yet there is nothing about this grand-daughterboard mentioned in the version of the manual here. I would be happy to scan the entire manual, when I can find a scanner that handles its specific page format correctly. I am not sure what the authority's ideas are on members scanning and uploading manuals ?[/SIZE]
[SIZE=10pt]I may have a sheet or leaflet of instructions for the Orion version of the accelerator. I should have it, but I have not found it yet. I also should have, but have yet to locate, a roundup of SE accelerator cards issued as a special report by either MacWorld or MacUser (published both in the monthly magazine, and published separately as contemporary standalone guide to all known accelerator cards).[/SIZE]
The piggyback connector at top right is for a "grand-daughterboard" PowerView large screen video system, which is not mentioned at all in the version of the manual / user guide / installation instructions I have found.
People with this daughterboard are far better off with the later FDHD / Superdrive version of the Mac SE, because (from memory) the earlier versions of the SE had a motherboard that slid in on rails, which makes things difficult, compared to later versions of the SE which had a combined pivoting (like a hinge) & sliding arrangement for inserting the motherboard. What I mean is: if someone is going to install this card in an SE, it is preferable to find a later SE to do the installation with.
[SIZE=10pt]I am back in Australia and feeling sick of it already after only one day in my home town. When I did this the last time, which was a year ago, the sickness was almost immediate, it only took me about 45 minutes to start feeling sick last year, by which I mean 45 minutes after the aeroplane landed in Sydney, which is about 7 hours before I reached my home town 600 km from Sydney. Maybe my former limited immunity to Australia is increasing with repeated annual exposure to Australia.[/SIZE]
[SIZE=10pt]But the good news is none of the two Mac SE motherboards or the one SE/30 motherboard here has suicide battery syndrome. But the SE/30 capacitors are ailing.[/SIZE]