I've read on WiiUBrew that the Wii U SATA controller contains 2 ports: port 0 is used by the disc drive and port 1 is unused.
Can port 1 be connected to an SATA drive and is support for it built into the OS or is it required to write code for it
So I was reading the 3DBrew page for the bootrom and I came across this:
I assume the MCU switch is the one triggered by the speaker when closing the system but what is the GPIO switch and why is it "very bad" to be closed?