The product is a set of two Motorola MediaCipher M-Card multi-stream cable cards with the part number 514517. These cable cards are designed for use in cable boxes, Tivos or digital televisions to decrypt and receive encrypted cable television signals. Specifically, they are compatible with Motorola devices and support multi-stream functionality. These cards are crucial for accessing cable TV services and ensuring the proper decryption of channels on compatible devices.Check with your cable company for compatibility.Free USPS Ground Shipping.