Introduction
This manual provides instructions for the safe and effective use of your Accessory USA 24V AC DC Adapter. This power supply is designed to provide reliable power to compatible Polycom SoundPoint IP series VoIP phones, including models IP320, IP321, IP330, IP331, and IP335. Please read this manual thoroughly before use.
Safety Information
- Ensure the adapter's voltage and current specifications match your device's requirements before connecting.
- Do not expose the adapter to water, moisture, or extreme temperatures.
- Avoid dropping or subjecting the adapter to severe impact.
- Do not attempt to open or modify the adapter. Refer servicing to qualified personnel.
- Unplug the adapter from the power outlet when not in use for extended periods.
- This product is CE / FCC / RoHS certified and features Over Voltage Protection (OVP), Over Current Protection (OCP), and Short Circuit Protection (SCP).
Setup
Follow these steps to connect your AC DC adapter to your Polycom SoundPoint IP phone:
- Verify Compatibility: Confirm that your Polycom SoundPoint IP phone model (IP320, IP321, IP330, IP331, or IP335) is listed as compatible with this 24V adapter.
- Connect to Device: Insert the barrel connector end of the adapter cable into the power input port on your Polycom SoundPoint IP phone. Ensure a secure connection.
- Connect to Power Outlet: Plug the AC prong end of the adapter into a standard electrical wall outlet.
- Power On: Your Polycom SoundPoint IP phone should now receive power and begin its startup sequence.

Image: The Accessory USA 24V AC DC Adapter, featuring a black power brick with a standard US two-prong plug and an attached black cable coiled and secured with a tie. This image illustrates the physical appearance of the power supply unit.
Operating Instructions
The Accessory USA 24V AC DC Adapter operates automatically once connected. It converts standard AC wall power to the required 24V DC power for your compatible Polycom SoundPoint IP phone. No user interaction is required for its operation beyond proper connection.
- Ensure the adapter is plugged into a functional power outlet.
- Confirm the barrel connector is firmly seated in the phone's power port.
- The adapter is designed for continuous use with compatible devices.
Maintenance
To ensure the longevity and optimal performance of your adapter, follow these maintenance guidelines:
- Cleaning: Disconnect the adapter from both the power outlet and the device before cleaning. Use a soft, dry cloth to wipe the exterior. Do not use liquid cleaners or abrasive materials.
- Storage: When not in use, store the adapter in a cool, dry place, away from direct sunlight and extreme temperatures. Avoid tightly coiling the cable to prevent damage.
- Inspection: Periodically inspect the cable and connectors for any signs of wear, fraying, or damage. If any damage is observed, discontinue use and replace the adapter.
Troubleshooting
If you encounter issues with your adapter, refer to the following common troubleshooting steps:
- No Power to Device:
- Ensure the adapter is securely plugged into a working wall outlet. Test the outlet with another device.
- Verify the barrel connector is fully inserted into the phone's power port.
- Confirm that your phone model is compatible with this 24V adapter.
- Inspect the adapter cable for any visible damage or breaks.
- Adapter Overheating:
- Ensure the adapter is used in a well-ventilated area.
- Verify that the connected device is not drawing more power than the adapter's rated output (24V, 1A, 24W).
- If overheating persists, discontinue use and replace the adapter.
- Intermittent Power:
- Check for loose connections at both the wall outlet and the device.
- Examine the cable for kinks or damage that could cause intermittent contact.
If these steps do not resolve the issue, contact customer support for further assistance.
Specifications
| Brand | Accessory USA |
| Input Voltage | Standard AC (e.g., 100-240V) |
| Output Voltage | 24 Volts DC |
| Output Current | 1 Amps |
| Wattage | 24 Watts |
| Connector Type | Barrel Connector |
| Compatible Devices | Polycom SoundPoint IP320, IP321, IP330, IP331, IP335 |
| Certifications | CE, FCC, RoHS |
| Safety Features | OVP (Over Voltage Protection), OCP (Over Current Protection), SCP (Short Circuit Protection) |
Warranty Information
Accessory USA products are manufactured to high-quality standards. For specific warranty details regarding your 24V AC DC Adapter, please refer to the product packaging or contact Accessory USA customer support directly. Keep your proof of purchase for warranty claims.
Customer Support
If you have any questions, require technical assistance, or need to report an issue with your Accessory USA 24V AC DC Adapter, please contact Accessory USA customer support. Contact information can typically be found on the product packaging or the official Accessory USA website.





