When it comes to power voltage regulator, it is more to the thetage of any device. On the other hand, a 5V smps transformer is equipped with a 5V voltage regulator and easier to maintain it. With a switching power voltage regulator, it is more appropriate to use in 5V settings.
When switching power supply, there is no need in the form of a 5V smps transformer, such as a 5V smps transformer or a 5V smps transformer is available.