Cisco PWR-1941-POE network equipment spare part Power supply unit (PSU)

The Cisco 1921 ships with an integrated AC power supply by default, and you do not need to select the AC power supply. In order to power ports on a switch module in a Cisco 1921 or 1941, you must order the router with a PoE power supply. For the Cisco 1921, the PoE power supply is external to the router. Table 12 lists the part numbers for the Cisco 1900 Series power supplies.