Universal Regulated Switching Power Supply. This product is ideal for all Electronic consumer products which require DC voltages of 3, 4.5, 6, 7.5, 9, or 12V DC and current up to 1000mA. Use with such products as CD players, Radios, Cassette Recorders, Electronic games, mini TV, Palm Computer and many other battery appliances. UL/CUL Listed. Plug sizes: 3.5mm, 3.5 x 1.35mm, 5.5 x 1.5mm, 5.5 x 2.1mm, 5.5 x 2.5mm, 4.0 x 1.7mm, 4.75 x 1.75mm, 2.35 x 0.75mm (O.D. x I.D.)