A:Answer This adapter works with most devices (like portable DVD players, speakers, modems, routers and more) using a round-pin connector. Your device is compatible if the 1) correct tip is available (Tip sizes include: 2.5 × .75 mm, 3.0 × 1.0 mm, 3.5 × 1.35 mm, 4.0 × 1.7 mm, 5.5 × 1.5 mm, 5.5 × 2.1 mm and 5.5 × 2.5 mm.), 2) voltage is between 3 and 12 V DC, 3) input does not require more than 1.3 A of current, and 4) polarity is positive. *Not for use with laptops.