Replace both 1206 fuses on 2CH USB Module from 4A (marking S) to 0.25A. This is to ensure we can't draw more than ~1A from each port, and in the scenario we do then the fuse will blow. The math is:
Output power per USB port: 5V * 1A = 5W.
Input power per USB port: 5W / 90% efficiency = 5.6W.
Input current per USB port: 5.6W / 24V = 0.23A, nearest fuse is 0.25A which also gives a bit of headroom.
ANTALIFE
