It's surprisingly hard to charge a large number of pro controllers without a giant rats nest of cables. The plastic feels a bit flimsy with 2 pro controllers sitting on it. They aren't cradled/securely held, so they easily rock around in all directions while sitting on the USB connector. The upright LED bars are only for joycon charging status, and there are tiny little LEDs below for the pro controllers. So if you're just charging pro controllers, the uprights will always be lit green regardless of charge state of the pro controllers. Unfortunately, these are the best I've found so far, as others have somehow felt cheaper or had other issues. They still get the job done and have a decently small footprint, but I'm not sure they're worth the price. Just wish there was something better out there.