diff --git a/windows/client-management/mdm/policy-csp-deviceinstallation.md b/windows/client-management/mdm/policy-csp-deviceinstallation.md
index c2166ecf46..c11cd41c96 100644
--- a/windows/client-management/mdm/policy-csp-deviceinstallation.md
+++ b/windows/client-management/mdm/policy-csp-deviceinstallation.md
@@ -6,7 +6,7 @@ ms.topic: article
ms.prod: w10
ms.technology: windows
author: MariciaAlforque
-ms.date: 11/30/2018
+ms.date: 12/01/2018
---
# Policy CSP - DeviceInstallation
@@ -234,9 +234,13 @@ ADMX Info:
-To enable this policy, use the following SyncML. This example allows Windows to install CD-ROM drives, floppy disks, and modems.
+To enable this policy, use the following SyncML. This example allows Windows to install:
-Enclose the class GUID within curly brackets {}. To configure multiple classes, use `` as a delimiter. To apply the policy to matching device classes that are already installed, set DeviceInstall_Classes_Deny_Retroactive to true.
+- Floppy Disks, ClassGUID = {4d36e980-e325-11ce-bfc1-08002be10318}
+- CD ROMs, ClassGUID = {4d36e965-e325-11ce-bfc1-08002be10318}
+- Modems, ClassGUID = {4d36e96d-e325-11ce-bfc1-08002be10318}
+
+Enclose the class GUID within curly brackets {}. To configure multiple classes, use `` as a delimiter.
``` syntax
@@ -251,7 +255,7 @@ Enclose the class GUID within curly brackets {}. To configure multiple classes,