... circuit Protction 4. 2year warranty S-400-12 Power supply unit 1. Handsome design, low price, good quality, first class , your optimal option ... . Short circuit / Overload / over Voltage Protection 3. LED indecator for power on 4. Cooling by free air convection 5. AC Input ... 7. All using 105°C long life capacitors 8. Installed with EMI filter, minimun wave 9. small size, light weight, handsome ...