two iso files from https://archive.org/details/cobaltraqrestorecd


----===[ 196-00102-01 notes ]======-----------------------....
     Welcome to the Cobalt Microserver OS restore CD Version 1.0

----===[ 196-00115-01 notes ]======-----------------------....
cat /mnt/196-00115-01/os_restore_version 
Restore CD PN: 960-RAQ40101AU
   Base SW PN: 190-00141-02

Cobalt Networks, Inc.
Cobalt OS Restore CD Version 2.0

-- instructions say is supports:
Qube 3 and MIPS Qube1/2
RaQ 3 and RaQ 4 and MIPS RaQ 1/2: