Question about Hx Desk Monitor Arm - 558057

Sali no you don't need an adapter anymore. Everything is included. You just need to have someone to help you. It is important that you know where the screws are to adjust the resistance so that the arm can support the g9. Greetings

yup goes without attachment / neo g9 here

I was able to screw on my G9 like this (model from 1 year ago).