Figure Information Figure Group ALICE upgrades during the LHC Long Shutdown 2 Figure Image Figure image (.eps) hmp_ro.png Figure Caption HMPID full DAQ structure. Four C-RORC boards are installed on two First Level Processor (FLP) computers of the O$^2$ data acquisition environment. Fourteen optical links connect the 14 RCBs, two per RICH module. Detail description Figure extracted from paper