diff --git a/pkg/harvester/dialog/EnablePciPassthrough.vue b/pkg/harvester/dialog/EnablePciPassthrough.vue
index 1d5aaaa4..733099a7 100644
--- a/pkg/harvester/dialog/EnablePciPassthrough.vue
+++ b/pkg/harvester/dialog/EnablePciPassthrough.vue
@@ -4,6 +4,7 @@ import { Card } from '@components/Card';
 import AsyncButton from '@shell/components/AsyncButton';
 import { escapeHtml } from '@shell/utils/string';
 import { HCI } from '../types';
+import { getHarvesterUserName } from '../utils/auth';
 
 export default {
   name: 'HarvesterEnablePciPassthrough',
@@ -34,16 +35,7 @@ export default {
     },
 
     async save(buttonCb) {
-      // isSingleProduct == this is a standalone Harvester cluster
-      const isSingleProduct = this.$store.getters['isSingleProduct'];
-      let userName = 'admin';
-
-      // if this is imported Harvester, there may be users other than 'admin
-      if (!isSingleProduct) {
-        const user = this.$store.getters['auth/v3User'];
-
-        userName = user?.username || user?.id;
-      }
+      const userName = getHarvesterUserName(this.$store.getters);
 
       for (let i = 0; i < this.resources.length; i++) {
         const actionResource = this.resources[i];
diff --git a/pkg/harvester/dialog/EnableUSBPassthrough.vue b/pkg/harvester/dialog/EnableUSBPassthrough.vue
index 9ad7ae30..fd3bf0ea 100644
--- a/pkg/harvester/dialog/EnableUSBPassthrough.vue
+++ b/pkg/harvester/dialog/EnableUSBPassthrough.vue
@@ -4,6 +4,7 @@ import { Card } from '@components/Card';
 import AsyncButton from '@shell/components/AsyncButton';
 import { escapeHtml } from '@shell/utils/string';
 import { HCI } from '../types';
+import { getHarvesterUserName } from '../utils/auth';
 
 export default {
   name: 'HarvesterEnableUSBPassthrough',
@@ -34,16 +35,7 @@ export default {
     },
 
     async save(buttonCb) {
-      // isSingleProduct == this is a standalone Harvester cluster
-      const isSingleProduct = this.$store.getters['isSingleProduct'];
-      let userName = 'admin';
-
-      // if this is imported Harvester, there may be users other than 'admin
-      if (!isSingleProduct) {
-        const user = this.$store.getters['auth/v3User'];
-
-        userName = user?.username || user?.id;
-      }
+      const userName = getHarvesterUserName(this.$store.getters);
 
       for (let i = 0; i < this.resources.length; i++) {
         const actionResource = this.resources[i];
diff --git a/pkg/harvester/formatters/HarvesterBackupTargetValidation.vue b/pkg/harvester/formatters/HarvesterBackupTargetValidation.vue
index 2c4f53dc..25679c6c 100644
--- a/pkg/harvester/formatters/HarvesterBackupTargetValidation.vue
+++ b/pkg/harvester/formatters/HarvesterBackupTargetValidation.vue
@@ -1,6 +1,7 @@
 <script>
 import { NORMAN } from '@shell/config/types';
 import { HCI } from '../types';
+import { getHarvesterUser } from '../utils/auth';
 
 export default {
   props: {
@@ -25,7 +26,7 @@ export default {
   },
 
   data() {
-    const user = this.$store.getters['auth/v3User'];
+    const user = getHarvesterUser(this.$store.getters);
 
     return {
       harvesterSettings:          [],
diff --git a/pkg/harvester/models/devices.harvesterhci.io.pcidevice.js b/pkg/harvester/models/devices.harvesterhci.io.pcidevice.js
index ed6734c9..9c488790 100644
--- a/pkg/harvester/models/devices.harvesterhci.io.pcidevice.js
+++ b/pkg/harvester/models/devices.harvesterhci.io.pcidevice.js
@@ -2,6 +2,7 @@ import SteveModel from '@shell/plugins/steve/steve-class';
 import { escapeHtml } from '@shell/utils/string';
 import { HCI } from '../types';
 import { HCI as HCI_ANNOTATIONS } from '@pkg/harvester/config/labels-annotations';
+import { getHarvesterUserName } from '../utils/auth';
 
 const STATUS_DISPLAY = {
   enabled: {
@@ -96,15 +97,8 @@ export default class PCIDevice extends SteveModel {
     if (!this.passthroughClaim) {
       return false;
     }
-    const isSingleProduct = this.$rootGetters['isSingleProduct'];
-    let userName = 'admin';
 
-    // if this is imported Harvester, there may be users other than admin
-    if (!isSingleProduct) {
-      const user = this.$rootGetters['auth/v3User'];
-
-      userName = user?.username || user?.id;
-    }
+    const userName = getHarvesterUserName(this.$rootGetters);
 
     return this.claimedBy === userName;
   }
diff --git a/pkg/harvester/models/devices.harvesterhci.io.usbdevice.js b/pkg/harvester/models/devices.harvesterhci.io.usbdevice.js
index 27ab6ccf..8cc539de 100644
--- a/pkg/harvester/models/devices.harvesterhci.io.usbdevice.js
+++ b/pkg/harvester/models/devices.harvesterhci.io.usbdevice.js
@@ -1,6 +1,7 @@
 import SteveModel from '@shell/plugins/steve/steve-class';
 import { escapeHtml } from '@shell/utils/string';
 import { HCI } from '../types';
+import { getHarvesterUserName } from '../utils/auth';
 
 const STATUS_DISPLAY = {
   enabled: {
@@ -87,15 +88,8 @@ export default class USBDevice extends SteveModel {
     if (!this.passthroughClaim) {
       return false;
     }
-    const isSingleProduct = this.$rootGetters['isSingleProduct'];
-    let userName = 'admin';
 
-    // if this is imported Harvester, there may be users other than admin
-    if (!isSingleProduct) {
-      const user = this.$rootGetters['auth/v3User'];
-
-      userName = user?.username || user?.id;
-    }
+    const userName = getHarvesterUserName(this.$rootGetters);
 
     return this.claimedBy === userName;
   }
diff --git a/pkg/harvester/utils/auth.js b/pkg/harvester/utils/auth.js
new file mode 100644
index 00000000..06996db5
--- /dev/null
+++ b/pkg/harvester/utils/auth.js
@@ -0,0 +1,31 @@
+/**
+ * Resolve the Harvester username from Vuex getters.
+ *
+ * Works with both `this.$store.getters` (in components) and
+ * `this.$rootGetters` (in Steve models).
+ *
+ * - In single-product (standalone Harvester) mode, always returns the
+ *   default username (`admin`).
+ * - Otherwise, falls back to the authenticated user's `username` or `id`.
+ */
+export function getHarvesterUserName(getters, defaultUserName = 'admin') {
+  const isSingleProduct = getters?.['isSingleProduct'];
+
+  if (isSingleProduct) {
+    return defaultUserName;
+  }
+
+  const user = getHarvesterUser(getters);
+
+  return user?.username || user?.id || defaultUserName;
+}
+
+/**
+ * Return the authenticated user object from Vuex getters.
+ *
+ * Works with both `this.$store.getters` (in components) and
+ * `this.$rootGetters` (in Steve models).
+ */
+export function getHarvesterUser(getters) {
+  return getters?.['auth/user'];
+}