Cisco IP Phone power transformer for the 89/9900 phone series

The Cisco CP-PWR-CUBE-4= provides power to your Cisco 8800 or 9900 series IP phones and expansion modules when Power over Ethernet will not be used.
Does not include country specific power cord. Universal voltage, suitable for use worldwide.
Note: This new power cube is not compatible with any Cisco phones other than the 8800 and 9900 series. See the CP-PWR-CUBE3= for other models.

also for 7821, 7841, and 7861