The controller attaches directly to the included RAM diamond base adapter with 1” ball and single socket arm. Loosen the socket arm’s knob and use the adjustable straps to fine-tune the body mount and adaptive controller to the most comfortable position.
When you’re not using the Xbox Adaptive Controller, swap it out with any compatible RAM 1” ball base, such as the RAM X-Grip cradle for phones and tablets.
This inclusive gaming kit includes hardware and a hex wrench for mounting an Xbox Adaptive Controller.
Microsoft Adapt (PDF)