The camera's cable is full-size USB A on the end that plugs into the computing device or USB hub, and micro size C on the end that plugs into the side of the camera. So if you need a full-size Type A connection, the cable already has that and you will not need an adaptor.
Some computing devices, especially single-board computers such as development boards and industrial control boards, lack a full size USB A port and may just have a micro-size port called USB 3 OTG (On The Go). RealSense cameras can connect to these micro-ports using either an adapter or an OTG cable.
Also please note that the RealSense forum has moved to a new location, so future questions should be posted there instead of on this forum. Thanks!