diff --git a/changelogs/fragments/2040-fix-index-error-in-redfish-set-manager-nic.yml b/changelogs/fragments/2040-fix-index-error-in-redfish-set-manager-nic.yml
new file mode 100644
index 0000000000..04d9a11101
--- /dev/null
+++ b/changelogs/fragments/2040-fix-index-error-in-redfish-set-manager-nic.yml
@@ -0,0 +1,2 @@
+bugfixes:
+  - redfish_config module, redfish_utils module utils - fix IndexError in ``SetManagerNic`` command (https://github.com/ansible-collections/community.general/issues/1692).
diff --git a/plugins/module_utils/redfish_utils.py b/plugins/module_utils/redfish_utils.py
index 8f14dbad78..99e5852b09 100644
--- a/plugins/module_utils/redfish_utils.py
+++ b/plugins/module_utils/redfish_utils.py
@@ -2676,6 +2676,10 @@ class RedfishUtils(object):
                         need_change = True
             # type is list
             if isinstance(set_value, list):
+                if len(set_value) != len(cur_value):
+                    # if arrays are not the same len, no need to check each element
+                    need_change = True
+                    continue
                 for i in range(len(set_value)):
                     for subprop in payload[property][i].keys():
                         if subprop not in target_ethernet_current_setting[property][i]: