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Compact white AC adapter with integrated plug for Cisco IP phones

Cisco Systems, Inc.

Cisco Systems, Inc. CP-PWR-CUBE-4= telephone accessory

SKU CH-S2W5-XZMC7 MPN CP-PWR-CUBE-4=

Powers Cisco 89/9900 series IP phones with a 48 V DC, 917 mA output from 100-240 V AC input

  • SpecificationsTechnical Information Device Supported: IP Phone Power Descr
  • Delivers constant 48 V DC for reliable IP phone operation
  • Wide 100-240 V AC input range suits global power standards
  • 917 mA output current enables fast device recharging
  • Compatible with Cisco 89/9900 series IP phones
  • Efficient AC adapter design with light weight

Cisco Power Cube 4 Adapter

This AC adapter supplies 48 V DC at up to 917 mA for Cisco Unified IP Phones. It accepts 100 V AC to 240 V AC at 50 Hz or 60 Hz, making it suitable for worldwide office deployments. The unit is designed specifically for the 89 and 9900 series IP phones.

Suits Cisco IP Phone 89 and 9900 series

Offices running these phone models can use this adapter for reliable desk power. Installations that require Power over Ethernet or a different voltage rail cannot use this unit. Buyers needing multi-device charging or battery backup should look at other solutions.

48 V DC 917 mA output specification

The adapter delivers a fixed 48 V DC output with a maximum current of 917 mA. This single electrical rating determines whether the unit matches the phone’s power input requirements. Verify the phone’s label for 48 V DC compatibility before purchase.

Highlights

  • Delivers constant 48 V DC for reliable IP phone operation
  • Wide 100-240 V AC input range suits global power standards
  • 917 mA output current enables fast device recharging
  • Compatible with Cisco 89/9900 series IP phones
  • Efficient AC adapter design with light weight

Specifications

BrandCisco Systems, Inc
ModelPower Cube 4 Adapter
Part NumberCP-PWR-CUBE-4=
SpecificationsTechnical Information
Device Supported:
IP Phone
Power Description
Input Voltage:
110 V AC
220 V AC
Input Voltage Range:
100 V AC - 240 V AC
Frequency:
50 Hz
60 Hz
Output Voltage:
48 V DC
Maximum Output Current:
917 mA
Miscellaneous
Compatibility:
Cisco Unified IP Phones:
8961
9951
9971
Shipping weight0.54 kg
Package size142 × 94 × 58 mm

Questions about this item

What is the maximum current the CP-PWR-CUBE-4= can supply continuously to a Cisco IP Phone?

The adapter delivers up to 917 mA at 48 V DC, which is the sustained limit for powering supported 89/9900 series phones.

How much heat or noise does the power cube produce when running 24/7?

It has no fan and uses a compact transformer design, so it runs silently with only minimal warmth during continuous operation.

Which Cisco phone series must I already own for this adapter to work?

It is made for the Cisco Unified IP Phone 89/9900 series, so one of those models is required for compatibility.

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