diff --git a/MdeModulePkg/Library/DxeDpcLib/DxeDpcLib.inf b/MdeModulePkg/Library/DxeDpcLib/DxeDpcLib.inf
index 6c0731ed06..8a9e863bfd 100644
--- a/MdeModulePkg/Library/DxeDpcLib/DxeDpcLib.inf
+++ b/MdeModulePkg/Library/DxeDpcLib/DxeDpcLib.inf
@@ -1,5 +1,7 @@
 /** @file
-  Component name for module DxeDpcLib.
+  Instance of DxeDpcLib.
+  
+  This module provides DPC service by consuming EFI DPC Protocol.
 
 Copyright (c) 2007, Intel Corporation.<BR>
 All rights reserved. This program and the accompanying materials
diff --git a/MdeModulePkg/Library/DxeIpIoLib/DxeIpIoLib.inf b/MdeModulePkg/Library/DxeIpIoLib/DxeIpIoLib.inf
index a32c9c2e20..1e812c8f83 100644
--- a/MdeModulePkg/Library/DxeIpIoLib/DxeIpIoLib.inf
+++ b/MdeModulePkg/Library/DxeIpIoLib/DxeIpIoLib.inf
@@ -1,5 +1,8 @@
 /** @file
-  Component name for module DxeIpIoLib.
+  Instance of DxeIpIoLib.
+
+  This module provides IP services by consuming EFI IP4 Service Binding Protocol and
+  EFI IP4 Protocol.
 
 Copyright (c) 2006, Intel Corporation.<BR>
 All rights reserved. This program and the accompanying materials
diff --git a/MdeModulePkg/Library/DxeNetLib/DxeNetLib.inf b/MdeModulePkg/Library/DxeNetLib/DxeNetLib.inf
index 8a20ab59f0..4ac01a7ca3 100644
--- a/MdeModulePkg/Library/DxeNetLib/DxeNetLib.inf
+++ b/MdeModulePkg/Library/DxeNetLib/DxeNetLib.inf
@@ -1,5 +1,5 @@
 /** @file
-  Component name for module DxeNetLib.
+  Instance of DxeNetLib.
 
 Copyright (c) 2006, Intel Corporation.<BR>
 All rights reserved. This program and the accompanying materials