I'm also running eCS 1.2R (and OS/2 Warp MCP2 before that) on this board. I'm not using the onboard LAN, either, but everything else I've tried on it works well.
The company was forming OS/2 Warp market during the 90-th:
promotion of software, support of the developers, infrastructure foundation.
Mensys catalogies from the 90-th: photos