What’s needed in an OEM system for CableCARD?
Various bits are needed including a special BIOS on the motherboard, a second COA in addition to your Windows Vista COA (eg. two different product keys), and the Digital Cable Tuner itself (OCUR). OEMs must meet specific sales requirements to become a Microsoft OEM in order to offer CableCARD PCs. OEMs also have to sign a number of documents and return them to CableLabs which puts them under various legal agreements in terms of what they can and can not do.