POWER SUPPLY-12V 5.0A

That is a 12V 5A Switching Power Supply (Fonte Chaveada). These are common "workhorse" components used to convert standard wall outlet AC power into a stable DC voltage for electronics.
​Here is a breakdown of what those specs mean and how you should use it:
​Key Specifications
​Voltage: 12V DC. This is fixed; do not use it for devices requiring higher or lower voltage.
​Current: 5.0 Amperes. This is the maximum it can provide. You can safely power a device that needs less than 5A (like a 2A LED strip), but using it for something that needs 7A will likely overheat or damage the unit.
​Wattage: Based on the formula P = V \times I, this unit provides up to 60 Watts of power