I note others have encouraged Wakespeed to incorporation an accessable usb port for the WS500 to take ongoing advantage of the phenomenal OGM WS500 Configuration and Dashboard tool.
So I sourced a 5m USB A to USB B cable with both connectors insert molded at a 90 deg left hand angle. The cable is from L-Com.com in Irvine CA, PN CA90LA-90LB-5M. The angles allow the USB printer plug to face down inside the WS500 and the other end directs the USB into the laptop back so there is more clearance with the chart table fiddle. Installed today thru the bilge and the PC on the nav table now can communicate directly with the WS500 in the afte cabin on the engine room bulkhead.
I filed an eased notch in the bottom of the regulator cast aluminum Faraday cage below the USB port with a 3/16" chainsaw file, using an X motion at the end to prevent sharp corners, This makes a perfect snug fit to the cable.
The watertight lip engaging the oring in the cover is removed, so there is a slight possibility of water ingress with total subersion, but I suspect that would not be my primary concern at that point.