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User IO -> Power Only USB Port Connection

Posted: Mon Jan 10, 2022 8:42 am
by segafan1985
I saw a YouTube video where someone had a USB cable connected between User IO Port -> Power Only USB Port. Why would you do this?

Can someone explain the purpose of these two ports even when not connected to eachother?

Re: User IO -> Power Only USB Port Connection

Posted: Mon Jan 10, 2022 2:55 pm
by Sigismond0
They probably had a BLISSter setup, not a USB setup. BLISSter boards are sort of like SNAC, and let you use native controllers with adapters. The BLISSter board needs to plug into the USER port for the LLAPI to work.

https://bliss-box.net/blisster-quick-reference/

There's absolutely nothing to gain by plugging the USB power port into the USER port, and that very well could cause damage.

Re: User IO -> Power Only USB Port Connection

Posted: Tue Jan 11, 2022 4:44 am
by segafan1985
What is the "User IO" port for then?

Re: User IO -> Power Only USB Port Connection

Posted: Tue Jan 11, 2022 3:53 pm
by Sigismond0
It is for SNAC adapters, BLISSter, etc.

Re: User IO -> Power Only USB Port Connection

Posted: Tue Jan 11, 2022 5:30 pm
by Xbytez
The MiSTer Wiki has a page on the User IO port here:

https://github.com/MiSTer-devel/Main_Mi ... Serial-IO)