3-12v adjustable power supply 30W gauge switching power supply multifunctional power adapter with USB port
Specification: 
Product Name: 3-12v adjustable universal power adapter
Rated Power: 30W
Input voltage: AC100-240V 0.25A 50 / 60Hz
Output voltage: 3V / 4.5v/5v/6v/7.5v/9v/12v
USB Output: 5.0V2.1A
Power line length: 1.2m
DC head output: 2.5 * 0.7mm 3.0 * 1.1mm 3.5 * 1.35mm
4.0 * 1.7mm 5.0 * 2.1mm 5.5 * 2.5mm
Material: ABS + PC
Net weight: 120g, gross weight: 142g
Main Features:
1. Broadband universal AC input voltage
2. Good anti-interference performance and high reliability
3. Small DC ripple and high working efficiency
4. Low working temperature and long service life
5. Small size, high power density
6. Good insulation and high electrical resistance
7. Full load high temperature burning machine, aging test
8. Short circuit protection / overload protection / overvoltage protection
9. Low power supply solution certified by international safety regulations