This read-only Integer32, ranging 0 to 32, reports how many PDUs are linked together in a daisy-chained group, per the object's own description. An admin checks this to confirm the monitoring system sees the expected number of chained units before drilling into any individual PDU's outlets, since a lower-than-expected count can indicate a chain link has dropped off. For example, if pduCount reads 4 in a rack that was cabled with five chained PDUs, the admin knows one unit has lost its chain connection and needs to be checked.