This reports the hardware revision of the card's NRTS (non-real-time scheduler) processor, a dedicated chip managing non-real-time ATM traffic shaping and scheduling. An admin troubleshooting NRTS-specific behavior, like unexpected multicast shaping results, checks this revision against vendor errata, since known NRTS quirks are often tied to specific hardware revisions of this dedicated processor rather than the main card logic. For example, an admin rules out a known NRTS scheduling bug once cardNrtsHwRev confirms the processor is already at the fixed revision, pointing the investigation elsewhere.