The ZyXEL BPS120 is a stand-alone backup power unit designed to connect up to six external networking devices. When the internal power unit of one such device fails, the BPS provides power instantly to the failing device to prevent it from rebooting. Although up to six devices can be connected, only one can be powered by BPS120 at once. The output rating is 12VDC 120 watts.
The single rack-mount BPS-120 unit can combine with the ZyXEL L2/L3 Enterprise switch with inline power, as well as an UPS to create a Centralized Power Provisioning System.