Cisco
Cisco Systems IP Phone Power Transformer
Best power solution for 8900 and 9900 series office phones.
This Cisco Systems IP Phone Power Transformer is specifically designed to power the 89/9900 phone series, ensuring a reliable power source for your communication systems. It offers a stable output of 48 V DC with a maximum current of 917 mA, compatible with a wide input voltage range of 100 V AC to 240 V AC. The adapter supports dual input frequencies of 50 Hz and 60 Hz, making it suitable for various regions. Its compact design ensures it doesn't occupy much space, and it's engineered for easy installation and optimal performance with supported Cisco IP phones.
Owner Satisfaction
4.5
/ 5
Category Rank
595
/ 3532
#595 in Power Adapters & Chargers
Output Voltage
48
/ V DC
Who it's for
- Office administrators prioritizing long-term equipment reliability
- IT managers needing guaranteed hardware compatibility
- Safety-conscious buyers protecting expensive network infrastructure
Who should skip it
- Budget-focused shoppers seeking low-cost third-party alternatives
- Users requiring a universal charger for multiple device brands
- Minimalists struggling with workstation cable management
Performance breakdown
Compatibility Precision
Engineered specifically for the 89/9900 series to ensure seamless power delivery.
Global Versatility
Wide input voltage range handles international power standards with total ease.
Power Stability
Consistent 48V output prevents connectivity drops during critical business calls.
Form Factor
Compact design keeps your workspace tidy without crowding adjacent power outlets.
Installation Simplicity
Plug-and-play setup allows for immediate deployment across office environments.
Build Reliability
Robust construction meets the high durability standards expected of Cisco hardware.
Key Specs
Output Voltage
48 V DC
Maximum Output Current
917 mA
Input Voltage Range
100 V AC - 240 V AC
Frequency
50 Hz, 60 Hz
Features
- Reliable power supply for Cisco IP phones
- Designed for 89/9900 phone series
- Wide input voltage range
- Supports 50Hz and 60Hz frequencies
- Compact and easy to install
What customers say
Customers consistently praise the Cisco Systems IP Phone Power Transformer for its reliable performance and excellent value. Many users highlight its perfect compatibility with various Cisco IP phone models, noting it functions exactly as an original equipment part should. The sentiment often emphasizes its role as a dependable replacement, restoring phone functionality without issues. Its straightforward plug and play nature contributes to a positive experience, making it a highly practical and cost effective solution for powering Cisco phones.
Know before you buy
This power adapter is specifically engineered for the Cisco 8900 and 9900 series IP phones. It is not designed for other Cisco phone series, so please verify your model number before purchasing.
Yes. Because it supports a wide input voltage range of 100 V to 240 V AC and both 50 Hz and 60 Hz frequencies, it is compatible with power standards in most regions worldwide.
Yes, it delivers a stable 48 V DC output at 917 mA, which meets the power requirements for the 8900 and 9900 series phones, including their high-resolution displays and advanced connectivity features.
Yes, this is an official Cisco Systems power transformer designed to meet the specific electrical specifications and safety standards required for their 8900 and 9900 series hardware.
First, ensure the power cable is securely seated in both the wall outlet and the phone's power port. If the device still fails to power on, verify that your wall outlet is functional and that you are using the correct model for your specific phone series.
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