Teksavers is a worldwide Reseller of Cisco Equipment. We help businesses, consultants and government clients buy or sell Cisco products like the A920-PWR400-D. About the A920-PWR400-D: This unit is designed for use with the ASR 920 Series routers (both 12- and 24-port variations and their related models).  As the part name suggests, the A920-PWR400-D is designed for DC power.  A similar product (A920-PWR-400-A) relies on AC power to function.  Related Search Terms: New used refurbished buy sell purchase preowned Related Search Terms: New used refurbished buy sell purchase preowned