S1 - What does this socket do?

[MiyaCulpa]

What does the socket I marked in the photo do?
Bios programming or 2.5" hdd socket ?

[dragonpoo]

If I were to guess, it's some kind of serial port for internal debugging. Since it's on the side that doesn't face customers, I expect it wasn't intended for use by normal people like us.

Still, it looks interesting.

[Gabe]

Something for internal debugging would be my guess as well, especially because of where it is.

[dragonpoo]

Zooming in and counting the pins, it appears to have 10 of them, which seems to match a classic serial cable. More evidence that it's probably debugging.

Still, I get MiyaCulpa's questioning. I love finding those "easter egg" features on devices that offer more than you'd expect. Kinda like RAM limits.

[MiyaCulpa]

Some mini PCs have a 2.5" HDD socket. I had hoped for such a thing, but it is not. There are 10 pins in total and there is 3 volts on the outer pins. I think it is something like a debug port. Another thing that interests me is the I/O integrated (ite IC etc. .) not on this pc.

[barry777]

This interface is used for internal debugging;
Currently, S1 does not support expansion of 2.5-inch SSD. It is recommended to connect qi'ta through the USB3.0 interface.