To my knowledge, Netgear does not provide CAD files for their products, especially not for devices intended to be mounted in 19" industry standard racks.
Consider to find your luck using Visio Stencils:
"NetZoom, Inc., the leader in network and datacenter management software solutions, has partnered with NETGEAR, Inc. to provide you with a complimentary NETGEAR-specific version of NetZoom Visio Stencils. This manufacturer specific stencil contains the most popular equipment shapes from NETGEAR and can be used with Microsoft Visio 2003, 2007, 2010 and 2013. Using NetZoom Visio Stencils, you can create high quality network and rack diagrams quickly and easily. "
