Note: this is an add-on license; it is not a stand-alone product. This
authorizes an additional 20 devices to access your Windows Server 2008 software.
Purchasing Device CALs may make more sense if your company has multiple-shift
workers who share devices. User CALs might make more sense if your company has a
need for employees to have roaming access using multiple devices like a laptop
and handheld computer.