Hi @souksakone
We do not support powering and arming any sUAS from a power supply. The ESC and other electronics will be damaged, and our warranty does not cover that.
If you need a bench top supply for code config, development, etc (without arming motors at all), then we sell a 30W adapter for XT60 here and you can adapt to Starling 2 max without much trouble: https://www.modalai.com/collections/accessories/products/ps-xt60