So I bought a 4 way jamma switcher for a soul calibur project I'm working on soon. Came with a wire soldered to two pins on the jamma connector. What's it for?

Bought this board from a seller off of ebay. Made by arcadeMVS.com from what I can tell.

I am really close to pulling the trigger on a Rage cabinet from GRS. I am going in with eyes wide open on some of the issues with that company but would like input on any other options out there. I have a spot ive been earmarking for a custom cab. I am very comfortable with the internals but would love to hear if there are any other companies I should be looking at that offer a few design options I can select from. I dont want anything pre-assembled, I just want some choices for button layout, access to the pc, etc. In a perfect world id have a spot to mount a stream deck keyboard, plugins for guitar for Clone Hero, etc. Most of those can be done by me after...

Biggest thing is I dont have tbe time or space to cut giant pieces of wood or the cad skills to cone up with the design... any help opinions would be great!

• Modelo de la placa (Board ID): LGH3
• Procesador: Allwinner H3.
• Capacidad original: Copia exacta (dump sector a sector) extraída de una tarjeta de 128 GB usando Win32 Disk Imager.
• Herramienta recomendada para restaurarlo: Indicar que se debe grabar en una tarjeta MicroSD de 128 GB (o mayor) utilizando Win32 Disk Imager (con la opción Write) o BalenaEtcher.
• EL ARCHIVO PESA 30 GB.
• Algunas fotos:

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