USB1 provides an OTG interface and connects through the OTG connector J15 positioned on the front panel of the enclosure.
USB2 and USB3 (J14b) provide USB host interfaces and connect through the combined RJ45 and Dual USB Type A connector J14, positioned on the rear panel of the enclosure. See Figure A.11 for details of the combined RJ45 connector (J14a).
For a full description of the USB signals refer to the datasheet for the NXP ISP1761 On-The-Go controller.
Figure A.12 shows the USB connectors and signals.