diff --git a/ShellPkg/Library/UefiShellDebug1CommandsLib/Pci.c b/ShellPkg/Library/UefiShellDebug1CommandsLib/Pci.c
index ba9caa7743..3e138188ce 100644
--- a/ShellPkg/Library/UefiShellDebug1CommandsLib/Pci.c
+++ b/ShellPkg/Library/UefiShellDebug1CommandsLib/Pci.c
@@ -1,7 +1,7 @@
 /** @file
   Main file for Pci shell Debug1 function.
 
-  Copyright (c) 2005 - 2018, Intel Corporation. All rights reserved.<BR>
+  Copyright (c) 2005 - 2019, Intel Corporation. All rights reserved.<BR>
   (C) Copyright 2013-2015 Hewlett-Packard Development Company, L.P.<BR>
   (C) Copyright 2016 Hewlett Packard Enterprise Development LP<BR>
   SPDX-License-Identifier: BSD-2-Clause-Patent
@@ -4515,8 +4515,14 @@ ExplainPcieLinkCap (
     case 3:
       MaxLinkSpeed = L"8.0 GT/s";
       break;
+    case 4:
+      MaxLinkSpeed = L"16.0 GT/s";
+      break;
+    case 5:
+      MaxLinkSpeed = L"32.0 GT/s";
+      break;
     default:
-      MaxLinkSpeed = L"Unknown";
+      MaxLinkSpeed = L"Reserved";
       break;
   }
   ShellPrintEx (-1, -1,
@@ -4672,6 +4678,12 @@ ExplainPcieLinkStatus (
     case 3:
       CurLinkSpeed = L"8.0 GT/s";
       break;
+    case 4:
+      CurLinkSpeed = L"16.0 GT/s";
+      break;
+    case 5:
+      CurLinkSpeed = L"32.0 GT/s";
+      break;
     default:
       CurLinkSpeed = L"Reserved";
       break;