Figure Information Figure Group ALICE upgrades during the LHC Long Shutdown 2 Figure Image Figure image (.eps) cru_block.eps Figure image (.pdf) cru_block.pdf Figure Caption Block diagram of the common readout unit (CRU): the CRU forms the interface between the first-level processors (via PCIe), the central trigger system (via TTS), and the detectors (via TTS and FE). Detail description Figure extracted from paper