diff --git a/cmd/gpu-kubelet-plugin/vfio-device.go b/cmd/gpu-kubelet-plugin/vfio-device.go
index 54c935daa..0b3697e96 100644
--- a/cmd/gpu-kubelet-plugin/vfio-device.go
+++ b/cmd/gpu-kubelet-plugin/vfio-device.go
@@ -134,6 +134,14 @@ func (vm *VfioPciManager) verifyDisabledVFs(pciBusID string) error {
 	if err != nil {
 		return err
 	}
+	if gpu == nil {
+		return fmt.Errorf("no GPU found at PCI bus ID %q", pciBusID)
+	}
+	// PhysicalFunction is nil for GPUs that do not support SR-IOV (e.g. T400).
+	// A nil PhysicalFunction means no VFs can exist, so it is safe to proceed.
+	if gpu.SriovInfo.PhysicalFunction == nil {
+		return nil
+	}
 	numVFs := gpu.SriovInfo.PhysicalFunction.NumVFs
 	if numVFs > 0 {
 		return fmt.Errorf("gpu has %d VFs, cannot unbind", numVFs)