Genuine CISCO 34-1977-05 A0 Adapter PSM18U-480 48V 0.38A 18W AC Adapter Charger S$31.98

Question about AC / DC Adapters ( From internet ):

How to protect the power adapter?

1. Unstable input voltage is the main factor for power adapter failure. Therefore, try to avoid sockets on the same network as high-power electrical appliances.
2. Protected against being struck by lightning or connected to an AC line that is not protected against lightning strikes.
3. Carefully unplug the adapter connectors, this is one of the most vulnerable parts.
4. Pay attention to ventilation and heat dissipation when the adapter is working, and do not cover the surface of the adapter with towels or paper.
5. Pay attention to pets such as cats and dogs, they often bite the connectors or cables of the adapter.
6. The adapter has a certain anti-drop and shock-proof function, but it may still cause magnetic displacement of the transformer or damage to the shell if it is dropped or hit at a high altitude.
7. Keep the adapter out of water.

The power adapter is broken, can I repair the power adapter myself?

Repair is not recommended because:

1. Opening the adapter may destroy the original heat dissipation, magnetic isolation, sound insulation, shock resistance and other functions.
2. Power adapters are generally integrated electronic components, it is difficult to find replacement parts, and it is also difficult to maintain.
3. Insufficient maintenance experience may lead to abnormal output of the adapter, burning of electrical appliances, and even safety accidents such as electric leakage and electric shock.
4. There are many inexpensive, high-quality original adapters available in the market.