We used this to support 3 computers (1 desktop, 2 laptops), 2 TV's 2 Iphones, and two DVD players and 2 Ipads... NO ISSUES at all. Also I have hosted parties with over 15 people connected no issues. Very solid unit.
Based on product specifications, this comes with a 90-day warranty for labor and 1-year warranty for parts from the manufacturer. You may contact Best buy representative to get help with your warranty inquiry. You may also complete the e-mail form at the contact page.