The I/O board connector is under the motherboard in these late-model Galaxy phones. Because why not make things harder?

The motherboard itself pops out with relative ease, giving us a peep at that now-Samsung-standard heatpipe.

The I/O daughterboard configuration matches the S8+ right down to the modular headphone jack.

Since we've already gone through the camera shenanigans, let's get straight to the chips.