Hi, Can you pls some one explain Difference between usercal and device cal in server2008?

User CALs license users to access your Windows servers while device CALs allow devices to access your servers. You only need one or the other and it is usually explained best using two opposite scenarios, Company A issues a laptop and desktop to everyone in the company. Here 2 device CALs or 1 user CAL would be required. Purchasing user CALs would be advantageous in this case. Company B maintains a lab of 100 computers for 500 employees. The company would need to purchase 500 user CALs or 100 device CALs. Purchasing the 100 device CALs would likely be advantageous over the 500 user CALs. See A Guide to Assessing Windows Server Licensing http://www.microsoft.com/licensing/about-licensing/client-access-license.aspx#tab=3 If you have questions, I would recommend confirming with Microsoft, use the "Contact a Specialist" link on the right side of this page, http://www.microsoft.com/licensing/ -- Mike Burr