@ruckage I think the early units had a different mixture of fire retardant chemicals which is affected by ultraviolet/sunlight so the inside will usually be safe from that. If yours hasn't yellowed now, it probably never will. Mine looks fine to the naked eye.
I bought a previous unit that was almost brown and chipping away and I managed to bleach it back to grey but it was so uneven with blotches that I decided to buy another one. The inside was still originally grey. That one was like $35 with 2 controllers so it's not much of a loss. This second one was like $25 because it wasn't working.
I originally tried to keep the original ac port, but it wasn't getting a good contact so I'd get voltage drops. I didn't think to use some spray cleaner at the time and instead went with a printer usb port.
I also tried to go with a microsd inside a cart, but in the end it was a lost cause. microsd's are so picky with the wiring. I kept getting random freezes. No issues with usb, and it's only 4 wires.
