@tjayhawk32 I don't think the order matters. The Pi has only 1 internal USB hub, any port would go over the same data path.

@herb_fargus Thanks. It's strange that they aren't compatible, but OK, time to get a USB 2 hub rather than playing around trying to get it working I guess.

@jediknight36 https://retropie.org.uk/forum/topic/12762/under-voltage-warnings-on-retroflag-nespi-case-best-power-supply/22# If you get the lightning bolt popup without the case, then you also need a better power supply.

@retropied You can try looking at @meleu's handy joystick selection script - https://github.com/meleu/RetroPie-joystick-selection - and adapt it to automatically re-order the controllers based on the emulator started.

@worcesterthecat 5v 2.5a not usb, not phone charger, not cheapo pile of junk power supply. Look up raspberry pi power supply

@Gamerguy010101 Please mark the thread as solved

@psychic2ombie they dont have to always be plugged in and you dont have to manually set anything. I leave ports 0 & 1 open in case i need something else to be player 0 & 1. I have 1 device that causes an issue. You most likely never will. If you want devices on your first hub to always be 0 & 1 you can. I use a lot of systems controllers on my setup so i need to have the ability to plug in other controllers in ports 0 & 1 which will then automatically make them controllers 0 & 1. You should never have to assign controllers using the joystick selection runcommand unless you are using bluetooth controllers or have a rare issue like i do.

Make sure the roms have the correct file extensions The hub could defenitely be a reason for this. You could try a hub with a own power supply...

@edmaul69 Nope no mausberry, I'm pretty comfortable just going through the menu. I would really like to, someday, figure out a way to plug in the power supply, and have a functioning switch to power on/off via the on/off switch on the Sega USB hub. It functions side to side but it's just for show, along with the vertical volume knob. I would like to plug in, switch it on, and it boot up, then switch off, and shutdown the system properly as if I went through the menu somehow. This one guy said he was able to accomplish this using python script, and I believe the switch wired into the GPIO. I'm not familiar with python or how I'd even go about configuring that, but I'm sure it's possible. Just need the know-how. That would be pretty sweet to just us the on/off switch like an actual Genesis console.

Final Decision.. I'm going to return this and see if I can find a POWERED USB2.0. I just tried one last thing: dwc_otg.speed=1 added to the /boot/cmdline.txt file This tells the Pi to run at the lowest possible bus speed. That means all the USB ports on the Pi are 1.1, the SD card slot/LAN/Wireless are all 12mpbs, and the whole system as a whole runs like it was built in the 90's. This worked, believe it or not. But the speed was too slow for my dongle to properly work. So that tells me, the keyboard is definitely 1.1 (it worked great with that low-speed) and the Xbox dongle requires at least 2.0. The green light came on to show it had power, and the Pi DID detect it, but data transmission was too slow for it to be useful. Somebody, PLEASE!!! What is a good USB hub that works? I basically know now that I need it to be USB2.0, and it has to be powered as the Pi can't send enough power through the hub.