diff --git a/audit/internal/collector/pcie.go b/audit/internal/collector/pcie.go
index b766cd9..d2384b5 100644
--- a/audit/internal/collector/pcie.go
+++ b/audit/internal/collector/pcie.go
@@ -278,6 +278,11 @@ func readPCIStringAttribute(bdf, attribute string) (string, bool) {
 // below the device maximum. Regular PCIe slots get Warning; NVLink bridge cards
 // get Critical because they are fixed internal connectors that must always train
 // to max speed — any downgrade signals a hardware fault.
+//
+// Disabled devices (sysfs enable==0) are skipped: they carry no data traffic and
+// their link state has no operational impact. This covers management endpoints
+// (e.g. PCIe switch fabric controllers on HGX baseboards) that the kernel never
+// activates but that lspci still reports with link stats.
 func applyPCIeLinkSpeedWarning(dev *schema.HardwarePCIeDevice) {
 	if dev.LinkSpeed == nil || dev.MaxLinkSpeed == nil {
 		return
@@ -285,6 +290,11 @@ func applyPCIeLinkSpeedWarning(dev *schema.HardwarePCIeDevice) {
 	if pcieLinkSpeedRank(*dev.LinkSpeed) >= pcieLinkSpeedRank(*dev.MaxLinkSpeed) {
 		return
 	}
+	if dev.BDF != nil {
+		if enabled, ok := readPCIIntAttribute(*dev.BDF, "enable"); ok && enabled == 0 {
+			return
+		}
+	}
 	desc := fmt.Sprintf("PCIe link speed degraded: running at %s, capable of %s", *dev.LinkSpeed, *dev.MaxLinkSpeed)
 	dev.ErrorDescription = &desc
 
diff --git a/bible-local/decisions/2026-06-12-pcie-disabled-device-link-warning.md b/bible-local/decisions/2026-06-12-pcie-disabled-device-link-warning.md
new file mode 100644
index 0000000..72f5fb5
--- /dev/null
+++ b/bible-local/decisions/2026-06-12-pcie-disabled-device-link-warning.md
@@ -0,0 +1,41 @@
+# Decision: Skip PCIe link-speed warnings for disabled devices
+
+**Date:** 2026-06-12
+**Status:** active
+
+## Context
+
+On HGX H100 SXM5 baseboards, the Microchip Switchtec PM41028 PSX PCIe switch
+(vendor 11F8, device 4128, NVIDIA subsystem 10DE:1643) appears in `lspci` as a
+"Memory controller". Its upstream link trains at Gen3 x2 while the device is
+capable of Gen4 x16. The device is permanently in a disabled state: memory access
+and bus-mastering are both off (Mem-, BusMaster-); `/sys/bus/pci/devices/<bdf>/enable`
+reads `0`.
+
+This chip is the PCIe fabric management endpoint for the NVSwitch interconnect — it
+carries only management traffic at low bandwidth and is intentionally not activated
+by any Linux driver. The bee audit was reporting a `statusWarning` with message
+"PCIe link speed degraded" for this device, which is misleading because the device
+is not in the data path.
+
+## Decision
+
+`applyPCIeLinkSpeedWarning` reads `/sys/bus/pci/devices/<bdf>/enable` via the
+existing `readPCIIntAttribute` helper. If the value is `0` the function returns
+early without setting any warning status.
+
+The check is vendor-agnostic: it applies to any PCIe device that Linux has not
+activated, regardless of make or model. This is consistent with the
+`no-hardcoded-vendors` contract — no vendor ID, device ID, or name string is
+used as a condition.
+
+## Consequences
+
+- PCIe fabric management endpoints, IPMI virtual devices, and other permanently
+  disabled PCIe functions no longer produce spurious link-degradation warnings.
+- Real link degradation on active devices (GPUs, NICs, NVMe, NVLink bridges)
+  continues to be detected and reported as before.
+- NVLink bridge cards retain their existing `statusCritical` path (they are always
+  enabled, so the early return is never taken for them).
+- The Switchtec device on HGX H100 boards shows `statusOK` with no
+  `error_description` in the audit JSON.
diff --git a/bible-local/decisions/README.md b/bible-local/decisions/README.md
index a9251e0..98a0c0a 100644
--- a/bible-local/decisions/README.md
+++ b/bible-local/decisions/README.md
@@ -7,3 +7,4 @@ One file per decision, named `YYYY-MM-DD-short-topic.md`.
 | 2026-03-05 | Use NVIDIA proprietary driver | active |
 | 2026-04-01 | Treat memtest as explicit ISO content | active |
 | 2026-04-29 | Treat embedded submodules as read-only | active |
+| 2026-06-12 | Skip PCIe link-speed warnings for disabled devices | active |