The Eaton 3S offers affordable and reliable UPS protection against the most common power quality problems for office and home computers. The attractive design and glossy finish of the Eaton 3S fits easily into modern office environment. - Attractive design and glossy finish make the 3S a perfect fit for the modern office environment - The 3S features a HID-compliant USB port (cable supplied). for automatic integration with common operating systems (Windows/Mac OS/Linux) - Protects Telephone. Internet and Ethernet line from "back door" power surges - Compact unit fits on or under your desk or can be mounted on a wall - Easy-to-replace battery helps to extend UPS service life