My DVR Expander USB Edition external hard drives from Western Digital is a 500GB external drive that sports DISH Network’s ViP Series HD DVRs. The drive allows you to store for approx. 300 hours of digital standard-definition (SD) or up to 60 hours of high-definition television programming. The device also comes with a unique no-fan passive cooling system. The Western Digital My DVR Expander USB Edition drive with 500GB storage capacity is priced at $150. [Western Digital ]