Combined Inverter External Connection Box with Connecting Ports

FIG. 1 is a front, right, bottom perspective view of a combined inverter external connection box with connecting ports according to the present application; FIG. 2 is a front, left, top perspective view thereof; FIG. 3 is a front view thereof; FIG. 4 is a rear view thereof; FIG. 5 is a left side view thereof; FIG. 6 is a right side view thereof; FIG. 7 is a top view thereof; and, FIG. 8 is a bottom view thereof. The broken lines in the drawings depict portions of the combined inverter external connection box with connecting ports that form no part of the claimed design.