This is the block diagram for the Original version of the HEX S (RB760iGS). It used different SoC and all RJ45 ports were connected "through" the switch. However, the "model" that anav was referring to was the E60iUGS, which as you can see in the diagram above has a direct CPU connection to Eth1 that bypasses the switch. Normally that would be a good thing for a WAN port, because it has a dedicated channel, however there was an issue on earlier versions of ROS (reportedly fixed in 7.20.x and back ported to 7.19.6) that is discussed in this thread Hex E50UG. But some reports say it is fixed, and some say Eth1 routed performance is still slower than when going through a switched port. E.g. Hex E50UG - #170 by codelogic and Hex E50UG - #171 by eric0x7677
