Block USB Storage Drive-Pen Drives-DVD-CD-Rom by using AD2008 GPO & Local GPO

Steps to block USB Storage Devices & DVD-CD-Rom drives by using GPO on Windows2008 & R2, below are the screen shots which are taken in Windows2008R2 AD.

Steps to block USB Storage Devices & DVD-CD-Rom drives by using Local GPO.
You can block it by using GPEDIT.MSC on a local PC of Windows7:


Even we can Block & UnBlock by Registry;


https://skydrive.live.com/?cid=ca38b51fb54ad84f&Bsrc=Share&Bpub=SDX.SkyDrive&resid=CA38B51FB54AD84F!214&id=CA38B51FB54AD84F%21214 - Disable USB Block


https://skydrive.live.com/?cid=ca38b51fb54ad84f&Bsrc=Share&Bpub=SDX.SkyDrive&resid=CA38B51FB54AD84F!214&id=CA38B51FB54AD84F%21214 - Enable USB Block