Overhub- 5v 4A power supply?

Hello all. I have a bunch of stuff plugged into
Overhub and at least one thing (a USB-C drive) doesn’t seem to be getting enough juice from my MBA’s USB bus power. The Overhub manual recommends a 5v 4A 1.35mm adapter… most seem to only go up to 2A. Does that matter? Any recommended 4A adapters out there? Thanks.

See post 49 here

Please give the search a try