[weblacky]

Hi Blacksmith!  Always pushing bounds?

Google Gemini says:
Yes, a SGI NUMAlink Gen 4 router can run NUMAlink Gen 3 connections.
NUMAlink Gen 4 offers backward compatibility with NUMAlink 3 connections because the links can operate in a NUMAlink 3 mode. This compatibility was important for allowing users to upgrade to SGI Altix systems that utilized NUMAlink 4 while still maintaining compatibility with existing NUMAlink 3 hardware.

Source refs (page 3) to: https://www.graphica.com.au/files/numali...ica.com.au

Also this may be of use to you: https://forums.irixnet.org/thread-3251.html