How to choose LED waterproof power adapter?

There are two driving modes: one is a constant voltage source for multiple constant current sources, and each constant current source supplies power to each LED separately. In this way, the combination is flexible, one LED failure will not affect the work of other LEDs, but the cost will be slightly higher. The other is direct constant current power supply, LED series or parallel operation. Its advantage is that the cost is a little low, but the flexibility is poor. It also needs to solve the problem that a certain led fault does not affect the operation of other LEDs. These two forms coexist for a period of time. The multi-channel constant current output power supply mode will be better in cost and performance. Maybe it's the mainstream direction in the future