FCC Warning Statement Changes or modif icat ions not expressly approved by t he part y responsible for compliance could void the user’s authority to operate t he equipment. This equipment has been tested and found t o comply w it h t he limit s for a Class B d igit al device, pursuant t o Part 15 of t he FCC Rules. These lim it s are designed to provide reasonable protect ion against harmful interference in a resident ial inst allat ion.