Eddie, I also have a seven-port USB/5v with multiple 110v AC outlets. I use it to charge the zillion lights on my recumbent bikes.

For 5v stuff for the computer, I use individual modules to power the mouse, for example. I also have a digital microscope on my desk to look at insects/diseases for identification on plants I grow that uses USB power. The individual modules are of various ampere ratings, from the type to charge the cell phones to slightly larger ones for higher ampere rated devices.

The seven-port device is okay for the garage but sort of clunky for the computer desk.

All this stuff has an ampere/milliampere rating that needs to be considered and matched to the use.

I have never looked at the output of any of these devices with an oscilloscope to see how much noise/ripple they generate or even measured the voltage to see how close to 5v dc they are.

I have a bunch of them, so I may go bust one of them up and look to see how it is made and do some testing. Not that they have caused me any known problems.

Billy

“Amazing! I’ll be working with Jaco Pastorius, Charlie Parker, Art Tatum, and Buddy Rich, and you’re telling me it’s not that great of a gig?
“Well…” Saint Peter, hesitated, “God’s got this girlfriend who thinks she can sing…”