Description
Physical and Environmental Characteristics
The PWR-2821-51-AC Cisco AC Power Supply has the following physical and environmental characteristics:
- Physical dimensions: The power supply measures 1.75 x 7.5 x 8.5 inches (4.4 x 19 x 21.6 cm) and weighs 3.5 pounds (1.6 kg).
- Power input: The power supply requires an input voltage of 100-240VAC, with a frequency range of 50-60Hz.
- Power output: The power supply provides a maximum output of 550W, with a voltage range of -48VDC to -60VDC.
- Cooling: The power supply uses a built-in fan for cooling, which helps to dissipate heat generated by the device.
- Operating temperature: The power supply is designed to operate in temperatures between 32 and 104 degrees Fahrenheit (0 to 40 degrees Celsius).
- Storage temperature: The power supply should be stored in temperatures between -4 and 158 degrees Fahrenheit (-20 to 70 degrees Celsius).
- Operating humidity: The power supply should be used in an environment with relative humidity between 5% and 95%, non-condensing.
- Altitude: The power supply is designed to operate in an environment with a maximum altitude of 10,000 feet (3,048 meters).
- EMI: The power supply meets the requirements of FCC Part 15, Class A, and CISPR 22 Class A, which are the standards for electromagnetic interference (EMI) emissions.
- Safety: The power supply meets the requirements of UL 60950-1, CSA C22.2 No. 60950-1, and EN 60950-1, which are international safety standards for information technology equipment.
Installation and Configuration
The PWR-2821-51-AC Cisco AC Power Supply is designed to provide power to Cisco routers and other devices that require a DC power source. The installation and configuration process for this power supply includes the following steps:
- Unpacking and Inspection: Carefully unpack the power supply and inspect it for any damage. If there is any damage, contact Cisco for a replacement.
- Installation: Install the power supply into the device by following the instructions provided in the device’s user manual.
- Connecting the Power Cord: Connect the power cord to the power supply and to an electrical outlet.
- Configuring the Power Supply: Configure the power supply settings by following the instructions provided in the device’s user manual.
- Verifying the Power Supply: Verify that the power supply is working properly by checking the status indicators on the device and the power supply.
- Power Supply Management: The power supply can be managed through a web interface, which allows for monitoring and configuration of the device.
- SNMP: The power supply supports SNMP, which allows for monitoring and management of the device using network management software.
- CLI: The power supply also supports CLI (Command Line Interface) which allows for more detailed configuration and management of the device.
It is important to follow the manufacturer’s instructions during the installation and configuration process to ensure that the power supply is installed and configured correctly. If there are any issues or concerns during the process, consult the Cisco’s documentation or contact Cisco’s technical support.
Remote Management and Monitoring
The PWR-2821-51-AC Cisco AC Power Supply can be managed and monitored remotely using the following methods:
- Cisco Network Assistant: This software allows for centralized management and monitoring of network devices, including the PWR-2821-51-AC power supply. It allows for monitoring of power usage, temperature, and other status information, as well as configuration of the power supply.
- Simple Network Management Protocol (SNMP): The power supply supports SNMP, which allows for monitoring and management using network management software such as Cisco Prime or third-party SNMP management software.
- Command Line Interface (CLI): The power supply can be managed and configured using the command line interface through a serial or Telnet connection.
- Remote Management Interface: The power supply can be accessed remotely through a web interface, which allows for monitoring and configuration of the device over the network.
- Power Management Software: The power supply can be monitored and managed through Cisco’s Power Management Software which allow users to monitor the power usage and control the power supply remotely.
- Cisco EnergyWise: The power supply can be integrated with Cisco EnergyWise, a solution that allows for the management and monitoring of energy usage across the network. This allows for the optimization of energy usage and the reduction of energy costs.
Key Information for this Cisco PWR-2821-51-AC
- Manufacturer: Cisco
- Part Number or SKU # PWR-2821-51-AC
- Product Name: AC Power Supply
- Product Type: Proprietary Power Supply
Power Description of AC Power Supply
- Input Voltage AC 100-240 V
- Frequency Required 47 – 63 Hz
Compatibility
- Cisco Intgrated Services Routers:
- 2821
- 2851





