If it is the latest gen 4k Onn boxes, the button should be beside the HDMI plug in. If it is the older version, I forget what that requires.
Update: Older Onns have a button but it is on a different side of the box, not next to HDMI port.
If it is the latest gen 4k Onn boxes, the button should be beside the HDMI plug in. If it is the older version, I forget what that requires.
Update: Older Onns have a button but it is on a different side of the box, not next to HDMI port.