The 3Com IntelliJack Gigabit Switch Power Supply powers an individual IntelliJack Gigabit Switch from a local wall outlet.
This power supply is required if your LAN does not have Power over Ethernet. Or you can use it to test and configure individual IntelliJack products during setup, prior to powering up the device.
Warranty information - Three Year Limited HardwareWarranty - Limited SoftwareWarranty for 90 days - 90 days of telephone technical support