Microsoft OS/2 1.1 on eBay

Ian, There are differences between the IBM and Microsoft versions of OS/2 with the networking being the key difference. There was also a 3COM version of OS/2 that is even more rare than Microsoft's. The 3COM version uses DIX or "true Ethernet" (with capital E) rather than 802.3. Most of the code for OS/2 server came from 3COM - it was the contract with Microsoft that eventually cost Bob Metcalfe his job. IBM sold LAN Server, Microsoft's was LAN Manager (as in the LANMAN authentication we still have today). Microsoft's was only sold to OEMs so most disks say Compaq. One of the things I want to investigate is the interoperability between the IBM and Microsoft versions of OS/2, so I need both. Jim On 11/30/2011 4:28 PM, Ian King wrote: