William's Microchannel Adapter Information

The following links lead to pages I have either created from scratch, or added information to. These pages cover a variety of Microchannel-bus option or expansion cards that are used in IBM PS/2 computers (Models 50 and higher) or some of the few clones that are floating around.

Before using any information presented here, read and understand the notice and disclaimer section below. If you are selling an item discussed here on eBay or anywhere else, read the "Information for eBay Sellers" below.

At the very least I have provided an adapter outline and a set of component IDs. Whenever I have more information or files relating to the item in question, I have placed such files online. Some of this information does not exist elsewhere.

NEW! 09/09/2006 - Added an Intel AboveBoard to the Memory Expansion section...

Communications (Network Cards, Modems, Serial/Parallel Ports, Misc Communications)
Memory Expansion

Disk & Storage Controllers
Other Cards

Processor Upgrades
IBM 486SLC2 33/66 MHz

More projects will be completed as I find the time to do them. Please note that I only document hardware. I don't presently have the skills to write device drivers or software for your adapter. If you don't see a card here, or if you have any information at all regarding something shown here, drop me an e-mail. You will be credited for your subsmission if you wish.

Notice & Disclaimer: All information on this site is provided on a "best effort, use at your own risk" basis. Not all pages or information are complete! Unless otherwise noted, information presented here for your use is the result of personal experimentation on the hardware at hand. As such, this information has the potential to be incorrect or damaging to your hardware. If you're not sure--then don't do anything here! Consult your manuals or seek assistance from trained service personnel or the manufacturer of your hardware, if they are still in business. I cannot accept any liability or claim arising from your use of this information. Damage to hardware caused by this or any other source of information is YOUR responsibility and YOUR problem. If you still don't know, then ASK. I can't guarantee an answer, but I'll try to find one.

Datasheets that may be provided for download are the copyrighted property of the company who wrote them. They are provided here as a convenience only and to give an idea of how and where a part is used in a given card design. It is not the intention of this page to undermine the rights of IC manufacturers and designers or to violate copyright law in any way, shape or form. Again, no liability from the use of these datasheets or other techinical documentation can be accepted on my part. These are provided "as is" and with all faults. You use these data sheets or other information AT YOUR OWN RISK!

You are--as with most pages on this site--encouraged to take complete copies for redistribution in their original format and presentation with all notices, images and supporting files intact. You may redistribute these pages in their entirety so long as no fee is charged for access to this information. This excludes reasonable connect time, media or duplicating fees. You may also use portions of these pages that I have written or created (text and images, unless otherwise noted) in other projects. However, other projects may not be for-profit projects. You must provide credit for any items used from this collection of information.

Information for eBay Sellers (and all other sellers with goods that are described on these pages)

eBay sellers that are selling or auctioning an item described on these pages are welcome to link to the relevant page for the item they are selling. Please DO NOT copy and paste text or images from these pages in your listing without getting my written permission. DO NOT link to images on this server from your auction listing. While it is recommended that you provide a buyer or winning bidder with a link to the information presented here, you may provide printed copies of this information under the following circumstances and conditions:

Under no circumstances is this content to be displayed with advertising materials of any type. These pages are Copyright 2005-2006 by William R. Walsh. All Rights Reserved.