The zamp port is installed on trailers and motorhomes across many brands. Lots of people use Renogy and other brands of panels with the zamp port. And, because of the widespread use of the Zamp port, there's a lot of choice out there in adaptors and cables to make other less expensive options work.
Renogy may even sell an adaptor, themselves. As long as the panel has mc4 connectors on the back, you should be able to buy a 10 ft cable with zamp end, or a cable and connector, for I'm estimating $25 to $50. You could call Renogy about the specific unit you want.. there are four options in John's link above. And, Renogy is running a labor day sale right now, as well. Yesterday, I saw a 20 per cent off coupon code for first time checkout with google express when I looked briefly at the renogy site.. .
Sherry