Duet2 WiFi Endstop Voltage

[Nordle]

Hello, I'd like to clean up the wiring of my machine a little bit and got one of these boards:

My x_endstop sits on the extruder carriage and would preferably wired trough this board. It uses 5V for the endstop though.
Is it safe to wire Duet2 Wifi endstop to 5V instead of the broken out 3.3V?

Or could I do this:

PC817 is optocoupler
?

Thanks

[dc42]

@Nordle if your Duet 2 is revision 1.04 or later, then the endstop STP inputs are safe for 5V.

[Nordle]

@dc42 It is, thank you