diff --git a/internal/exporter/reanimator_converter.go b/internal/exporter/reanimator_converter.go
index b0fe113..36031b2 100644
--- a/internal/exporter/reanimator_converter.go
+++ b/internal/exporter/reanimator_converter.go
@@ -718,10 +718,19 @@ func mergeDetailMaps(primary, secondary map[string]any) map[string]any {
 
 func canonicalKey(item models.HardwareDevice) string {
 	kind := canonicalMergeKind(item.Kind)
+	bdf := strings.ToLower(strings.TrimSpace(item.BDF))
+	if kind == "pcie-class" && bdf != "" {
+		// BDF identifies one physical PCI function; prefer it over serial for
+		// pcie-class devices. Multi-port NICs commonly report the same serial
+		// (the physical card's serial) across several BDFs/ports — keying on
+		// serial first would collapse distinct ports into a single record and
+		// silently drop the others.
+		return kind + "|bdf:" + bdf
+	}
 	if sn := normalizedSerial(item.SerialNumber); sn != "" {
 		return kind + "|sn:" + strings.ToLower(sn)
 	}
-	if bdf := strings.ToLower(strings.TrimSpace(item.BDF)); bdf != "" {
+	if bdf != "" {
 		return kind + "|bdf:" + bdf
 	}
 	return ""