I have looked at all the information I can find and there is no pin 1 reference on anything I have been able to find.
Added 1 year, 5 months ago.
Hello there, thanks fo reaching us. Pin 1 should be set at the left of the 3D model shown in the site, when seen from the side with two protrusions. This can be confirmed by checking the drawing here: https://tools.molex.com/pdm_docs/sd/510210400_sd.pdf
Please reach back if you have any other questions, we'd be happy to help!
Answered 1 year, 5 months ago.