This Gauge32 holds the highest single-sample count of PCIe flow-control protocol errors that UCS Manager observed during any one collection interval within the last 7 days, i.e. the link's credit-based flow-control bookkeeping between the two ends of the PCIe link became inconsistent, captured at its worst moment. Unlike the plain (non-H) gauge for this window, this high-water value stays latched at the worst reading for the rest of the window even if the fault stops recurring, which is what lets an admin catch a brief PCIe error burst that a simple end-of-window snapshot would have missed. For example, if a marginal riser produced a spike of 19 PCIe flow-control protocol errors in one polling cycle and then went quiet, this field would hold 19 until the last 7 days window rolls forward, even though the plain gauge has since dropped to 0.