HP Part Number 438587-002 corresponds to an HP ExpressCard/54 Digital/Analog TV Tuner. It is a legacy mobile media accessory originally designed for HP Pavilion and Media Center laptops that allows users to watch and record live over-the-air TV directly on their computer.Product SpecificationsForm Factor: ExpressCard/54 (plugs into a standard 54mm ExpressCard laptop slot).Broadcast Compatibility:Supports both analog (NTSC) and digital (ATSC) TV signals.Internal Hardware:Often powered by the Hauppauge WinTV 885 BDA Tuner/Demodulator.Accessories:Complete kit with an external remote control, IR receiver, and portable antenna. wireless capabilities and is designed to connect to an ExpressCard 54 port. This product offers convenience and ease of use for controlling media center functions from a remote distance.The item is lightly used and still fully functional