Application: This 30W universal power supply applies to all your android phone, wireless receivers, printers, chess set, LED base, games consoles, paper shredder, DVD players, radios, speaker, audiotape recorders and players, electronic gizmos, blood pressure monitor, and many other 3V to 12V Small Home Electronics devices. Worldwide Input: 100-240V 1.0A 50-60Hz DC Output: regulated 3V 4.5V 5V 6V 7.5V 9V 12V 0-2500mA Dc cord: 4.92 feet Tips: 8 pcs adapter plugs Money saver, this adapter can largely save your space and the one can replace a lot chargers.Important Note: DC polarity: inner Positive(+), outer Negative(-). It is NOT compatible with devices that require Central Negative (-) Polarity. The wrong polarity would cause some damage to your device, you can check your device polarity information printed beside the power port. This AC adapter doesn't work with devices Over 30W. If the required voltage is not in the options, please choose the close voltage. For example, if you device needs 5.5V, you can choose 5V or 6V.8 Adapter Tips Size : 2.5x0.7mm 3.0x1.1mm 3.5x1.35mm 4.0x1.7mm 5.5x2.5mm 5.5x2.1mm 1x Micro USB plug. 1x LED Terminal ConnectorNote: There is a USB Port at the bottom of the adapter, you can connect any standard USB cable and power two devices at the same time! USB: 5V 2.1A