The Cisco RPS1000 380W Redundant Power Supply Unit supplies redundant power for one of up to six attached devices in a convenient, 1-rack-unit form. It helps ensure uninterrupted operation and protection against device power supply failures by providing uninterrupted failover for Cisco Small Business switches and network storage system devices. The failover behavior for the unit is "first come, first served."When it detects a failure, the Cisco RPS1000 provides power to the failed device instantaneously so that the attached device does not suffer loss of function or reboot. The affected switch logs the power supply failure event in its local log file as well as to a central event manager via Simple Network Management Protocol (SNMP) traps or syslog messages.The Cisco RPS1000 supports Cisco NSS4000/NSS4100 4-Bay Gigabit Storage System devices and NSS6000/NSS6100 4-Bay Advanced Gigabit Storage System devices, as well as Cisco SFE2000/SFE2000P 24-Port 10/100 Ethernet Switches and SGE2000/SGE2000P 24-Port Gigabit Switches. The unit automatically delivers the appropriate amount of power to the attached device. The Cisco RPS1000 has a maximum capacity of 380W, sufficient to deliver power to any of these attached devices without any loss of function.